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What Exactly is an Eye Chart?

If there’s one aspect of optometry that everyone recognizes, it’s the traditional eye chart, with its rows of big letters on top, which gradually become smaller the farther down you go. This chart is usually known as the Snellen chart.

Yet how much do you really know about this eye chart? Are all eye charts the same? How are these eye charts used? And when were they invented?

Here’s everything you need to know about eye charts and more!

What is an Eye Chart?

An eye chart is one of the tools your eye doctor uses to assess your eyesight. Based on how well you can see various letters on the chart, your optometrist will determine whether you have myopia (nearsightedness), hyperopia (farsightedness), presbyopia (age-related farsightedness) or astigmatism, and will measure the prescription that will give you the clearest, most comfortable vision.

Are All Eye Charts The Same?

There are a number of variations to the standard Snellen eye chart. The one an eye doctor uses depends on the personal needs and abilities of the patient. For example, eye doctors will use charts with pictures or patterns for younger children who may not have learned to read or identify letters and numbers.

There are also certain charts that specifically measure distance vision, while others are better for measuring near vision.

History of the Snellen Eye Chart

The Snellen eye chart was developed by Dutch eye doctor Hermann Snellen in the 1860s. Before this standardized eye chart was developed, each eye doctor had their own chart that they preferred to use.

Having so many different eye charts made it impossible to standardize the vision correction available to patients. Eyeglass makers didn’t receive the defined measurements they needed to accurately design, manufacture and measure the optical prescriptions their patients needed.

For the first time, the Snellen eye chart allowed a person to provide a standardized prescription from any eye care provider they chose to any eyeglass maker, and get the same optical lenses to accurately correct their vision.

How The Snellen Chart Is Used in Eye Exams

The standard Snellen chart displays 11 rows of capital letters, with the first row consisting of a single large letter. The farther down the chart you go, the smaller the letters become.

Your eye doctor will ask you to look through a phoropter – an instrument used to test individual lenses on each eye during an eye exam – and look at the Snellen chart placed 20 feet away. Your eye doctor will prescribe the lenses that provide you with the clearest and most comfortable vision.

In many offices, where 20 feet of space may not be available, you’ll be asked to view the chart through a mirror. This provides the same visual experience as if you were standing 20 feet away.

If you have 20/20 vision, it means you can see what an average person can see on an eye chart from a distance of 20 feet. On the other hand, if you have 20/40 vision, it means you can only see clearly from 20 feet away what a person with perfect vision can see clearly from 40 feet away.

If you have 20/200 vision, the legal definition of blindness, this means what a person with perfect vision can see from 200 feet away, you can see from 20 feet away.

Does 20/20 Visual Acuity Mean Perfect Vision?

No. While eye chart tests identify refractive errors, they can’t detect signs of visual skill deficiencies or diseases such as glaucoma, cataracts or macular degeneration. These are diagnosed using advanced equipment as part of a comprehensive eye exam with your local eye doctor. Early diagnosis and treatment of eye conditions are essential to ensuring long-term vision and eye health.

For more information, give us a call at or visit us in person at , today!

Q&A With Your Local Optometrist

How do you keep your eyes healthy?

You only have one set of eyes – don’t take them for granted!

Make sure to implement the following habits for healthy eyes (and body). These include:

  • Eating a balanced diet rich in fiber, fruits and vegetables
  • Drinking plenty of water to hydrate your body and eyes
  • Not smoking, and avoiding 2nd-hand smoke
  • Wearing sunglasses to protect your eyes from ultraviolet (UV) rays
  • Maintaining normal BMI with regular exercise
  • Regular visits to your eye doctor as recommended

What health conditions can an eye exam detect?

A comprehensive eye exam can often detect certain underlying diseases that can threaten your sight and eye health, such as diabetes, high blood pressure, high cholesterol, tumors, autoimmune conditions and thyroid disorders. This is why having your eyes checked regularly is key. The earlier the diagnosis and treatment, the better the outcome and the higher your quality of life.

Covid Patients Are 40% More Likely to Get Diabetes – What Does That Mean for Your Vision?

Covid 19 Patient Sick in BedHave you had Covid-19? After your fever and cough have subsided, you may think the virus is behind you. However, even after your Covid test comes back negative, you may experience health problems in the near future, including diabetes.

Recent studies have found that a significant percentage of post-Covid-19 patients developed diabetes within a year of contracting the virus. This is particularly problematic, as diabetes raises the risk of developing many health problems, including several sight-threatening eye conditions that can rob people of their vision.

What Does the Research Show?

A March 2022 Lancet study that evaluated the records of 181,280 U.S. military veterans found a 40% higher risk of developing Type-2 diabetes in those who had Covid. Although those at greatest risk were over 65, African American and/or had underlying health conditions, many younger patients also developed Type 2 diabetes.

A study published in January 2022 by the Centers for Disease Control (CDC) found that children and teens under 18 were more likely to receive a new diabetes diagnosis (both Type 1 and Type 2) at least 30 days after infection than those who never contracted Covid.

Scientists are investigating exactly why Covid-19 raises the risk of developing diabetes. In many cases, it’s believed that the virus targets pancreatic cells, which are responsible for making insulin, a hormone that regulates blood sugar levels. A lack of insulin causes diabetes.

Some scientists also theorize that inactivity and weight gain due to lockdowns and quarantines may have raised the risk of developing diabetes.

Diabetes-Related Conditions

Diabetes is linked to many eye conditions, including:

Blurry Vision – High blood sugar drives the lens inside your eye to swell, causing your vision to blur.

Cataracts – Diabetes can cause cataracts, cloudy patches that form in the lens of the eye.

Glaucoma – This disease develops from high pressure inside the eye and can lead to severe vision loss.

Diabetic Retinopathy – High blood sugar levels damage the small fragile blood vessels on the retina, leading to vision loss.

Maculopathy – Swelling of the macula, the center of the retina, can make it difficult to drive, read or see detail.

Some of these conditions have no noticeable symptoms during their early stages when it’s still possible to prevent or minimize vision loss. So having regular comprehensive eye exams is crucial.

How to Reduce Your Risk of Diabetes Post-Covid

Even after you’ve recovered from Covid, you may still be at a higher risk of developing diabetes. So, along with people who have a family history of the disease, make sure to book a comprehensive eye exam, eat a healthy and balanced diet, don’t smoke, maintain your appropriate weight, and ask your physician to monitor your blood sugar levels.

Also, if you have any eye symptoms, such as blurry vision, schedule an appointment with Vision MD Eye Doctors immediately. Remaining vigilant and aware of the risks can help safeguard your vision thanks to early intervention and treatment.

Are you concerned about the effect having Covid may have on your eyes? Schedule an appointment with Vision MD Eye Doctors today!

Our practice serves patients from College Park, Glenn Dale, Washington, D.C, and Bowie, MD and surrounding communities.

Q&A with Dr. Saya Nagori

Q: What is a diabetic retinal eye exam?

A: A diabetic retinal [eye__exam] checks for diabetic retinopathy, a condition that affects the small thin blood vessels in the retina located at the back of the eye. Your optometrist will place eye drops into your eye to open your pupils so they can more easily see the back of your eye. They may take digital images to inspect blood vessels: these full-color 3D images show the cross-section of the retina and measure the retinal thickness to help your optometrist detect any fluid or blood leakage.

Q: How common is vision loss with diabetes?

A: People with diabetes are more likely to experience eye and vision problems. Among people over 45 diagnosed with diabetes, 17.6% experience some degree of vision loss.
– 9.2% is caused by cataracts
– 4.1% is caused by diabetic retinopathy
– 2.2% is caused by macular degeneration
– 2.1% is caused by glaucoma. Therefore, anyone diagnosed with or with risk factors for diabetes should have regular eye exams to protect their vision and eye health.

Request An Appointment
Call 301-235-8344

The Link Between Dry Eyes and Depression

The Link Between Dry Eyes and Depression 640×350Depression is a serious illness that impacts a person’s mood and emotional well-being. It creeps into all areas of a person’s life, and can become life-threatening if left untreated.

Not only does depression impact mental health; it can manifest as physical symptoms, too, like insomnia, chronic pain and inflammation, weight loss or gain and heart problems, among others. These physical problems can worsen depressive thoughts — sometimes leading to a vicious cycle.

Interestingly, many patients with depression also suffer from severe dry eye symptoms. The question is, how are these two conditions related?

What is Dry Eye Syndrome?

Dry eye syndrome, also known as dry eye disease, is a chronic condition that results from inadequate lubrication of the eyes. Ocular hydration is crucial when it comes to keeping your eyes healthy and your vision clear. Your tears are responsible for maintaining this necessary hydration, and in healthy eyes fulfill their unique mission each time you blink.

Your tear film is made up of three layers, consisting of oil, water and mucus. If any of these layers become compromised, inadequate tear quality or insufficient tear quantity can result and lead to a host of uncomfortable dry eye symptoms.

The most common dry eye symptoms include:

  • Dry eyes
  • Red or irritated eyes
  • Itchy eyes
  • Gritty eyes
  • Light sensitivity
  • Blurry vision

Can Depression Cause Dry Eye (or Vice-Versa)?

This is what researchers are trying to find out.

In a March 2022 study published in JAMA Ophthalmology, researchers examined the link between depression and severe dry eye symptoms. The study followed 535 dry eye patients for an entire year.

After a year, the patients who tested positive for depression had more severe dry eye symptoms than the patients who didn’t have depression. Their symptoms were measured based on the Ocular Surface Disease Index (OSDI), Brief Ocular Discomfort Index and composite dry eye disease sign score.

Additionally, severe depression was associated with more severe dry eye symptoms at baseline, six months, and one year.

The study concluded that depression was associated with more severe dry eye symptoms, which suggests that among patients with moderate to severe dry eye syndrome, those with depression may be likely to have more severe dry eye symptoms.

The researchers said further research is needed to learn exactly why people with depression have more severe dry eye symptoms than those without depression.

Could the sometimes debilitating symptoms of dry eye syndrome actually cause depression and anxiety?

A 2016 dry eye study published in Nature concluded that chronic discomfort and pain from dry eye symptoms can negatively affect the cognitive processes, sleep, mood and mental health. The researchers urged eye doctors to be aware of the higher incidence of dry eye syndrome in people with depression, whatever the underlying cause.

Can Antidepressants Cause Dry Eye Symptoms?

Yes. Antidepressants have been shown to increase dryness in the body, including the eyes. These medications work by blocking signals between nerve cells, which can result in insufficient tear production and dry eye syndrome.

If you’re taking an antidepressant, be sure to inform your eye doctor during your consultation.

How We Can Help

At Vision MD Eye Doctors in Glenn Dale, we recognize that some of our patients that come in with dry eye symptoms may be suffering from depression.

We’ll diagnose the cause of your dry eye symptoms and offer the most effective dry eye treatments to give you the relief you’re searching for.

Contact us today to schedule a dry eye assessment and take the first step towards regaining your quality of life.

Frequently Asked Questions with Dr. Saya Nagori

Q: Who is affected by dry eye syndrome?

  • A: While dry eye syndrome is most common in adults over 50, it can occur at any age. The following factors can increase your risk of dry eye:
    – Aging
    – Hormonal changes
    – Medical conditions such as Sjogren’s syndrome and rheumatoid arthritis
    – Prolonged screen time
    – Living in a dry, dusty or windy environment
    – Eye allergies
    – Blepharitis or meibomian gland dysfunction
    – Certain medications, such as decongestants, antihistamines, antidepressants, hormone replacement therapy
    – Vitamin A deficiency

Q: How can you reduce your risk of dry eye?

  • A: While some dry eye risk factors can’t be avoided completely, making some lifestyle changes can help. Practice these recommended tips:
    – Use a humidifier to add moisture to the air
    – Wear wraparound sunglasses outdoors to protect your eyes from harsh winds
    – Take frequent screen breaks and blink often while using your digital device.
    – Quit smoking
    – Use lubricating eye drops
    – Consume a healthy diet including omega 3 and drink plenty of water.
    – Have regular eye exams

Request A Dry Eye Appointment
Do You Think You Have Dry Eye? Call 301-235-8344

Bloodshot Eyes – Should You Be Concerned?

You wake up in the morning ready to start your day, only to discover that your eyes are bloodshot. That might not be surprising if you stayed up late to finish a project, had too many drinks at a party or spent time in a smoke-filled room.

But bloodshot eyes can also signal an underlying eye problem. If your eyes appear red or bloodshot, make an appointment with an eye doctor for a comprehensive eye exam to determine the cause and to receive effective treatment.

Why Do I Have Bloodshot Eyes?

When blood rushes to the front of the eye, the tiny red blood vessels on the white of the eye dilate and become visible. This makes the eyes appear red and irritated.

So why do these blood vessels dilate, causing your eyes to look bloodshot?

Bloodshot eyes tend to be caused by:

  • Dry eyes
  • Irritants such as smoke, pollen and perfume
  • Lack of sleep
  • Excessive alcohol consumption
  • Spending too much time in front of the computer

Bloodshot eyes due to lifestyle and environmental irritants may disappear on their own, or you can try to relieve them with over-the-counter eye drops or liquid tears. Lifestyle changes, such as getting more sleep, cutting down on alcohol intake and limiting screen time can often be helpful. If allergies are the culprit, oral antihistamines and antihistamine eye drops may relieve symptoms.

At other times, underlying problems requiring prompt medical attention can cause your eye’s blood vessels to dilate. The following are some of these medical conditions:

Conjunctivitis

You’ve probably heard of “pink eye.” It’s another name for infectious conjunctivitis – an infection of the conjunctiva, the thin membrane covering the eyelid and the front surface of the eye.

There are two types of infectious conjunctivitis – bacterial and viral.

If your child has conjunctivitis, they’re not alone. About 12% of kids get bacterial conjunctivitis every year. This highly contagious condition affects children and adults. In addition to reddish eyes, the following symptoms are associated with conjunctivitis:

  • Bacterial conjunctivitis – irritated eyes, swollen eyelids, eye discharge, crusty eyelids and excessive tearing
  • Viral conjunctivitis – cold or flu-like symptoms, runny nose, fever, itchy eyes, excessive tearing

If you or your child are experiencing these symptoms, it’s important to schedule a prompt appointment with an eye doctor, who can diagnose whether the conjunctivitis is viral, bacterial or due to allergies.

Depending on the diagnosis, your eye doctor will prescribe antibiotic eye drops or creams to treat bacterial conjunctivitis. The viral form may run its course after a few days, but cold compresses and non-prescription eye drops may provide relief.

Dry Eye Syndrome

If your eyes are chronically bloodshot you may have dry eye syndrome (DES). Signs of DES include:

  • Dry, irritated eyes
  • Burning or stinging eyes
  • Discharge from the eyes
  • Light sensitivity
  • A feeling you have something stuck in your eyes
  • Blurred vision
  • Watery eyes

Dry eye syndrome is most commonly caused by a blockage of the tiny meibomian glands in the eyelids. These glands secrete oil that keeps eye moisture from evaporating too quickly. Without the oil, tears dry fast, leaving your eyes feeling dry, itchy and with a bloodshot appearance.

Too much screen time, aging, certain medications such as antihistamines, and medical conditions such as Sjogren’s syndrome can cause dry eye syndrome.

In addition to any medications or in-office treatments your eye doctor recommends, make sure to get plenty of hydration, take frequent breaks from digital screens and use a humidifier in your home.

Uveitis

In addition to bloodshot eyes, if you also experience blurred vision, see floaters or your eyes feel painful, you may have an eye inflammation called uveitis. The causes of uveitis include:

  • Autoimmune or inflammatory condition
  • Infection
  • Medication side effects
  • Cancer (in rare cases)

Unfortunately, uveitis symptoms can often be mistaken for something less serious. That’s the reason it’s important to get an eye exam if your eyes are bloodshot. Left untreated, uveitis can lead to serious conditions such as retinal scarring, cataracts and vision loss.

Depending on the cause and severity, your eye doctor may treat uveitis with prescription eye drops, steroid pills, injections or eye implants.

Eye Injury

It’s vital that all eye injuries receive immediate eye care from an eye doctor.

Even a minor eye injury can cause a big red blotch to form on the white part of the eye (sclera). The cause is a broken blood vessel or a subconjunctival hemorrhage.

Although the appearance of this blood looks severe, and can make the entire white part of the eye appear bright red, a subconjunctival hemorrhage is usually painless and doesn’t cause vision loss. Any time you notice excessive blood on the eye following an eye injury, schedule an appointment with an eye doctor to assess the health of your eye.

Glaucoma

In rare cases, bloodshot eyes may signal the presence of glaucoma – a leading cause of vision loss and blindness.

While some types of glaucoma don’t show symptoms in the early phases, bloodshot eyes can indicate the type of glaucoma that requires immediate medical care. This disease causes damage to the optic nerve due to excessive pressure within the eye. When this pressure suddenly rises, the eye’s blood vessels become dilated and visible, making the eye appear red.

If you have bloodshot eyes and/or have the following risk factors for glaucoma, immediately schedule an appointment with your eye doctor.

  • Family history of glaucoma
  • Aged 60+
  • African American, Asian or Hispanic
  • Diabetes
  • High blood pressure

Bloodshot Eyes Won’t Go Away?

Talk to Us Any time you notice bloodshot eyes or blood on the front of the eye, don’t wait. Schedule your eye exam with Dr. Saya Nagori at Vision MD Eye Doctors in Glenn Dale today.

Q&A With Your Local Optometrist

Can I get bloodshot eyes after LASIK surgery?

LASIK surgery is highly effective minimally invasive laser eye surgery that can correct refractive errors, but like all surgical procedures, it can have side effects. Your eyes may be bloodshot or you could see halos from a few days to three weeks after surgery. Additionally, you may experience other dry eye symptoms. Eye drops and liquid tears can alleviate these symptoms, but if you have any concerns about your eyes following LASIK surgery contact your eye surgeon.

What Should I Expect from a Glaucoma Exam?

If you have a family history and/or other risk factors for glaucoma, and if your eyes look bloodshot, consider scheduling a glaucoma exam. Your eye doctor may perform the following tests:

  • Tonometry – eye pressure test
  • Gonioscopy – to see how fluid is draining out of your eye
  • Vision field test – to examine the functioning of the optic nerve
  • Dilated pupil exam – to detect any damage to the optic nerve
  • Retinal photo or OCT – digital examination of the retina and optic nerve health

5 Need-to-Know Facts About Glaucoma

elderly couple sitting outside width=While most people have heard of glaucoma, many aren’t aware of how and why it can lead to vision loss and blindness, and why or how regular eye exams can help safeguard their vision. To get a better understanding, check out these 5 important facts.

Glaucoma Causes Permanent Vision Loss

Glaucoma is a leading cause of vision loss and blindness, affecting more than 1 in 50 adults. Nowadays, more than 80 million people around the world have glaucoma, with the number is expected to reach a staggering 111 million by 2040!

Vision loss is caused by abnormally high pressure within the eye which permanently damages the optic nerve that delivers the eye’s messages to the brain.

The rise in eye pressure results from the buildup of fluid in the eye that does not drain effectively out of the eye.

Though it’s possible to manage glaucoma symptoms, vision loss can’t be reversed once it’s occurred. That’s why it’s crucial to catch this serious eye condition in its early stages.

Half the People With Glaucoma Don’t Know They Have It

Yes, you read that correctly. One of the most worrying things about glaucoma is that half the people with this condition don’t even know they have it! The most common type — primary open-angle glaucoma — has no obvious symptoms in its early stages. It’s no wonder glaucoma is called the ‘Thief of Sight.’

The best way to avoid any vision loss from glaucoma is to have regular eye exams to detect the condition as soon as possible.

Some Are More At Risk for Glaucoma Than Others

The following are risk factors for glaucoma:

  • Being 60 or older
  • A family history – particularly of open-angle glaucoma
  • African, Asian or Hispanic descent
  • High blood pressure
  • Diabetes
  • Underactive Thyroid

Glaucoma Can Be Treated, Not Cured

There is no cure for glaucoma and vision that has already been lost to the condition can’t be restored. However, glaucoma can be treated, and the progression of the disease can be stopped or slowed.

Common treatments for glaucoma include:

  • Prescription eye drops that can lower pressure inside the eye
  • Oral medications, such as carbonic anhydrase inhibitors
  • Laser therapy, such as SLT or trabeculoplasty, is used to open up channels to improve the drainage of fluid from the eye
  • Eye surgery or trabeculectomy – surgical removal of obstructions in the eye’s drainage system
  • Trabecular stent bypass – a stent is placed in the eye to make drainage easier

Only an Eye Exam Can Diagnose Glaucoma

As mentioned above, regular eye exams are essential to detect glaucoma, especially in the early stages before permanent vision loss has occurred. Your eye doctor may use several types of tests to detect glaucoma:

  • Tonometry – measurement of eye pressure
  • Visual field – tests for peripheral vision loss
  • Gonioscopy – determines if the drainage system is open.
  • Corneal thickness (pachymetry) – the thickness of the cornea can affect the eye pressure measurements
  • Optic Nerve Exam – detection of any nerve damage using digital imaging

Glaucoma is yet another good reason to get your eyes tested regularly, especially if you’re over 60. To check the health of your eyes, schedule a comprehensive eye exam at Vision MD Eye Doctors today.

Our practice serves patients from College Park, Glenn Dale, Washington, D.C, and Bowie, MD and surrounding communities.

Frequently Asked Questions with Dr. Saya Nagori

Q: How much time does it take for glaucoma to cause blindness?

  • A: In most cases of open-angle glaucoma, it can take several years from the onset of the disease before significant vision loss occurs. However, in the case of closed-angle glaucoma, where the eye pressure rises suddenly, it can immediately cause severe vision loss. The speed of the onset of glaucoma depends on the type of glaucoma and eye pressure levels. The higher the pressure, the faster glaucoma can drive vision loss.

Q: How many people go blind from glaucoma?

  • A: Overall, the incidence of blindness in at least one eye from glaucoma is 26.5% after 10 years, and 38.1% after 20 years. This means that without effective treatment the chance of going blind in one eye is more than 1 in 4 in just 10 years.

References

Request An Appointment
Call 301-235-8344

5 Ways to Prevent Dry Eyes During Air Travel

Dry Eye Air Travel Tips 640×350While traveling can be taxing on the entire body, the eyes are especially vulnerable — particularly when wearing a mask to protect from COVID. When traveling by plane, the dry air can cause your eyes to become red, parched and irritated. While you can’t control all variables during your travels, eye specialists have discovered a number of ways to reduce the chances of experiencing the unpleasant symptoms of “travelers’ dry eye.”

Here are five suggestions for preventing dry eye from affecting your vision.

Drink plenty of water. If your body isn’t properly hydrated, it will have a tougher time increasing tear production in a dry atmosphere. Humidity levels on planes are typically below 20%, which is lower than the Sahara Desert! Keep your eyes moist and comfortable by drinking plenty of water before, during and after your flight.

Wear your glasses. Since contact lenses remove moisture from your eye’s surface tear film, they can contribute to dry eye. Wearing your glasses can help keep your eyes moist.

Wear a sleep mask. Even when your eyelids are closed, your eyes might lose moisture, which happens frequently when you sleep. On a plane, a sleep mask can help prevent additional dryness.

Use hydrating eye drops. When you’re in a dry environment, a good hydrating eye drop can provide a brief respite.

Make sure your face mask fits snugly. When a person’s breath rises upward it can dry out their eyes. A face mask that fits securely around the bridge of the nose can prevent air from reaching the eyes.

Is dry eye making you miserable, especially when traveling? Put an end to the discomfort and struggle by contacting Vision MD Eye Doctors. Our dedicated eye doctors will get to the bottom of your dry eye and provide effective, lasting treatment.

Our practice serves patients from College Park, Glenn Dale, Washington, D.C, and Bowie, MD and surrounding communities.

Frequently Asked Questions with Dr. Saya Nagori

Q: Can dry eye be cured?

  • A: In some cases, yes. A range of successful treatment options can help manage dry eye for long-term relief. Your eye doctor can also provide in-office treatments for more advanced forms of dry eye disease.

Q: What type of treatments are available for dry eye?

  • A: Depending on the cause of the dry eye, treatment options include:
    – Lubricants
    – Punctal plugs
    – Topical steroids
    – Warm compresses
    – Protective eyewear
    – Intense pulse light
    – Switching to medications that don’t cause dry eye symptoms

Looking for dry eye treatment? Contact Vision MD Eye Doctors today!

Request A Dry Eye Appointment
Do You Think You Have Dry Eye? Call 301-235-8344

Signs It’s Time For Cataract Surgery

Elderly Couple Discussing Cataract SurgeryCataract surgery, which replaces the cataract-affected lens of the eye with a new, clear artificial lens, is the most common surgical procedure in the world. While the procedure is considered safe and effective, patients want to know the optimal time to have the surgery.

Early Signs of Cataracts

During the earlier stages, individuals with cataracts experience cloudy vision and sensitivity to glare and light. Halos may appear around lit objects at night, and night vision may be impaired. Colors may appear washed out, such as bright red hues appearing dark pink.

Signs You Need Cataract Surgery

It’s common for people to live with cataracts for several years before considering surgery. The following are signs it is time to have your cataracts removed:

  • You find it difficult to see well enough to perform tasks at work
  • Your vision has gotten in the way of doing activities around the home, such as cooking and cleaning
  • You no longer see the television screen or printed material clearly
  • Driving, especially at night, no longer feels safe
  • Glare and bright lights are more pronounced

If you experience any of the above, schedule an appointment with your eye doctor to discuss cataract surgery.

The Presence of Other Eye Problems

Your eye doctor may encourage you to have cataract surgery if your cataracts render it difficult to examine the back of your eye to treat a range of serious eye conditions, such as glaucoma, macular degeneration and retinopathy. Any of these may require the urgent removal of the cataract so the optometrist can accurately diagnose and manage other serious eye problems.

What Happens If You Delay Surgery?

There are advantages to having cataract surgery earlier rather than later. Cataracts can severely interfere with daily life and can make night driving difficult, even hazardous. If left untreated, cataracts result in vision loss and eventually blindness. Additionally, over time cataracts become thicker, darker and denser, which can add unnecessary complications to the surgery and lengthen the post-surgery recovery period.

However, in certain cases, patients can wait to have cataract surgery. In the meantime, their eye doctor can recommend stronger prescription lenses or the use of bright lights to help them see better.

Whether you decide to get cataract surgery early on or to wait it out, we encourage you to do so under the guidance of out optometric team at Vision MD Eye Doctors.

Our practice serves patients from College Park, Glenn Dale, Washington, D.C, and Bowie, MD and surrounding communities.

Frequently Asked Questions with Dr. Saya Nagori

Q: What Are the Benefits of Cataract Surgery?

A: Having cataract surgery:

  • – Restores clear vision
  • – Enhances enjoyment of reading and watching TV
  • – Improves quality of life by allowing you to do everyday activities and hobbies
  • – Lowers the risk of developing other eye problems, such as eye inflammation and glaucoma
  • – Renders it safer to drive in low light environments

Q: How Do I Lower My Risk of Cataracts?

A: The tips below may help reduce the risk of developing cataracts:

  • – Have regular eye exams to catch any problems early
  • – Wear sunglasses to block UV rays – 10% of cataract cases are related to the sun’s harmful UV rays
  • – Maintain healthy blood sugar levels, particularly if you have diabetes
  • – Eat colorful fruits and vegetables rich in Vitamins C and E
  • – Quit smoking and drink only moderate amounts of alcohol
  • – Be aware that steroidal eye drops and corticosteroids may increase the risk of cataracts

References

 

Request An Appointment
Call 301-235-8344

What’s The Link Between Dry Eye and Accutane (Acne Medication)

Teen with severe acne wearing maskAccutane, generically called isotretinoin, is an oral medication that is widely prescribed to treat severe acne that hasn’t responded to other treatments.

Although this drug often does a great job of reducing acne, it has several potential side effects that can affect many bodily systems, including the eyes.

Isotretinoin and Dry Eyes

Isotretinoin works by decreasing the size of the oil glands that secrete oil onto the skin. By reducing the production of the facial oils, the pores become less clogged and the amount of acne diminishes.

As the medication travels through the bloodstream, it also penetrates the eyelids’ meibomian glands, which produce the oil for tears.

These meibomian glands, which line the inner portion of the eyelids, play an important role in keeping the eyes hydrated and healthy by secreting oil to stabilize the tear film. When Accutane suppresses their function, the oil layer in the tear is inadequate, allowing excessive tear evaporation. As a result, the eyes dry out.

A 2012 study published in JAMA Dermatology analyzed the ocular effects of isotretinoin and concluded that taking it places patients at a significantly higher risk of experiencing a range of adverse ocular effects.

Common ocular conditions that were associated with this acne medication were dry eye syndrome, blepharitis, conjunctivitis, photosensitivity, contact lens intolerance and papilledema.

The researchers found that the ocular conditions resulted from changes to the cornea, eyelids, retina and meibomian glands. Additionally, the drug was found in the tear film and caused increased ocular irritation.

The good news is that these effects are often temporary, and resolve within a few months after completing treatment. One study, published in Optometry and Vision Science (2015), however, found that 1% of patients developed permanent meibomian gland dysfunction after taking isotretinoin.

 

How a Dry Eye Optometrist Can Help

Some dermatologists will refer their patients to an optometrist for a dry eye evaluation before prescribing isotretinoin to treat acne. If the patient already has signs of ocular surface disease or is taking other medications that interfere with tear production, the doctor may decide against prescribing isotretinoin.

We can help by thoroughly assessing your ocular condition to help your dermatologist determine the best acne treatment for you, as well as help you manage your dry eye symptoms.

If you or a loved one is currently taking or has taken isotretinoin and is experiencing symptoms of dry eye syndrome such as eye irritation or burning eyes, we can offer lasting treatment and solutions.

To schedule your dry eye consultation or learn more about our services, call Vision MD Eye Doctors today.

 

Frequently Asked Questions with Dr. Saya Nagori

Q: Should I use lubricating eye drops while taking acne medication like isotretinoin?

  • A: Lubricating eye drops may be an appropriate treatment for medication-induced dry eye syndrome However always consult with your optometrist before purchasing drops from the drugstore. The huge range of choices in your local pharmacy can be hard to navigate alone, and not all eye drops will be right for you. We can help guide you to the best eye drops for your condition.

Q: What are the common symptoms of dry eye syndrome?

  • A: Common symptoms of dry eye syndrome include watery eyes, gritty eyes, burning or painful eyes, red and irritated eyes, mucus around the eyes, the inability to wear contact lenses, sensitivity to light and blurred vision. The frequency and severity of these symptoms can range greatly from patient to patient, and treatment will depend on the underlying cause of your symptoms.

Our practice serves patients from College Park, Glenn Dale, Washington, D.C, and Bowie, MD and surrounding communities.

Request A Dry Eye Appointment
Do You Think You Have Dry Eye? Call 301-235-8344

6 Glaucoma Myths Debunked

elderly couple with their familyGlaucoma can do a great deal of damage to your visual system if it goes undetected and untreated. Unfortunately, there is a lot of misinformation out there about glaucoma symptoms, detection and treatment that cause people to wait to see an eye doctor until it’s too late to prevent vision loss. In this article, we debunk 6 common glaucoma myths.

Myth 1: Glaucoma testing is painful

The Truth: Glaucoma testing is basically painless.

The most commonly used first test for glaucoma is an air puff test. Your optometrist will ask you to place your chin on a chin rest and while looking at a small light, a quick, soft puff of air will be blown at your eye to test the pressure inside your eye. The test takes mere seconds and reveals a great deal of valuable information to your eye doctor about your risk of glaucoma.

Your optometrist may also use an OCT device to create a full-color 3D scan of the inside of your eye, and perform visual field testing to see if the eye pressure has caused any changes to your field of vision. Both these tests can detect damage to ocular structures caused by glaucoma. Both tests are completely non-invasive, as neither touch the eye.

If necessary, your eye doctor may use anesthetic eye drops as part of a Goldmann applanation tonometry test. While these drops may sting slightly for a few seconds, the rest of the test is completely painless. After the anesthetic is applied, your eye doctor will use a small probe and a blue light to quickly and gently touch the cornea. This is an additional method to accurately determine the exact measurement of your inner-eye pressure.

Myth 2: Glaucoma cannot be prevented

The Truth: There are many steps a person can take to minimize their risk of developing glaucoma. They include:

  • Living a healthy lifestyle.

Research published in March 2016 in JAMA Ophthalmology has shown that a healthy diet that includes a lot of fruits and vegetables (especially the green leafy kinds) significantly reduces a person’s chances of developing glaucoma. Regular exercise helps as well, with experts suggesting that a regular routine of moderate to vigorous exercise may reduce risk by as much as 73%. Ask your physician about an appropriate exercise regimen for your age and body type. If you smoke, quitting could significantly lower your risk of glaucoma.

  • Having regular comprehensive eye exams. This one is especially important if you have a history of glaucoma in your family since glaucoma can be hereditary. Even if you don’t have a family history, regularly scheduled eye exams are important. Early detection of risk factors associated with glaucoma can put your optometrist on the lookout for subtle warning signs.
  • Protecting your eyes from injury. Severe eye injuries can significantly raise your risk of glaucoma. [Eye_doctors] recommend wearing protective eyewear any time you take part in activities where foreign objects may get in your eyes. This includes woodworking, soldering or working with any kind of paints or chemicals. Many sports, including baseball and racquetball, have a high incidence of eye injury.

Myth 3: There’s only one type of glaucoma

The Truth: There are several types of glaucoma. Each has its own causes and treatments.

The two most common types of glaucoma are open-angle and angle-closure glaucoma.

With angle-closure glaucoma, the structure in your eye responsible for the healthy outflow of fluid from the eye, known as the trabecular meshwork, becomes blocked. This prevents the outflow of fluid from the eye, elevating the intraocular pressure, damaging the ocular nerve and leading to vision loss.

This increase in eye pressure and nerve damage can occur suddenly or gradually over time. If a sudden spike in pressure occurs, the symptoms may include severe headache, nausea, vomiting, eye pain and seeing halos around lights.

Open-angle glaucoma occurs when the trabecular meshwork remains open, but there is still resistance to the outflow of fluid from the eye. This resistance creates a slow build-up pressure inside the eye, and just as in angle-closure glaucoma, damages the optic nerve and leads to vision loss. Open-angle glaucoma develops slowly and shows no obvious symptoms until irreversible damage to your eyes and vision has occurred.

Myth 4: Once you have glaucoma, nothing can be done to help

The Truth: While it is true that there is no cure for glaucoma, optometrists do have a number of options to help lower intraocular pressure, reduce its impact and save your sight

Treatment usually starts with medicated eye drops and oral medications that either increase the outflow of fluid from the eye or decrease the amount of fluid your eye produces.

If these treatments don’t work, eye doctors may also recommend the surgical implantation of drainage tubes, laser therapy or minimally invasive glaucoma surgery.

Myth 5: Only older people get glaucoma

The Truth: It is true that people over 60 are at the highest risk for glaucoma. However, glaucoma can affect people at any age.

Even infants can develop glaucoma if they’re born with certain conditions or birth defects that affect the eyes.

Individuals who are more susceptible include:

  • People who have sustained a serious eye injury in the past
  • People with a family history of glaucoma
  • Diabetics and those suffering from conditions such as cardiovascular disease and sickle-cell anemia
  • Those taking steroid medications long-term
  • African Americans and Hispanics
  • Asians (have a higher risk of closed-angle glaucoma)

Myth 6: You can’t have glaucoma if you don’t have symptoms

The Truth: Open-angle glaucoma is the most common type of glaucoma, accounting for over 90% of all glaucoma cases. Unfortunately, this type of glaucoma shows no noticeable signs or symptoms until vision loss has occurred.

Since glaucoma tends to impact the peripheral (side) vision first, many people might not notice that their vision is gradually shrinking. This is why regular comprehensive eye exams are so important to ensure that glaucoma is caught early, and a treatment plan can be devised well before serious damage has occurred.

Glaucoma can be a devastating eye condition if not caught and treated as early as possible. To find out more about prevention and treatment of glaucoma and similar eye conditions, contact us today.

 

Frequently Asked Questions with Dr. Saya Nagori

Q: Can smoking harm my eye health?

  • A: Yes. In multiple studies, researchers have found that the more cigarettes a person smokes each day, the higher their risks of developing glaucoma. Beyond glaucoma, smokers are also at a significantly higher risk of developing other eye diseases, including cataracts, age-related macular degeneration, diabetic retinopathy and dry eye syndrome.

Q: When should I consider glaucoma surgery?

  • A: Glaucoma surgery should be considered if your eye doctor has tried all other treatments, including prescription eye drops, oral medications and laser therapy, without success. Many types of glaucoma surgery exist. Ask your eye doctor to assess your condition and help decide which surgery is the best option to reduce your risk of vision loss, including blindness.Surgery cannot restore vision already lost because of glaucoma, but it can help protect the vision you still have and prevent your glaucoma from worsening.
Our practice serves patients from College Park, Glenn Dale, Washington, D.C, and Bowie, MD and surrounding communities.

Request An Appointment
Call 301-235-8344

Ocular Hypertension

What is Ocular Hypertension?

The term ocular hypertension usually refers to any situation in which the pressure inside the eye, called intraocular pressure (IOP), is higher than normal. Eye pressure is measured in millimeters of mercury (mm Hg). Normal eye pressure ranges from 10-21 mm Hg. Ocular hypertension is usually defined as an IOP of greater than 21 mm Hg.

Because ocular hypertension is the most frequent cause of permanent optic nerve damage, having high pressure inside your eye can raise your risks of developing glaucoma. The optic nerve is the only connection between the eye and the brain, so any damage leads to lifelong vision loss and even ‘Tunnel Vision.’

However, glaucoma doesn’t develop in everyone with ocular hypertension.

What Causes Ocular Hypertension?

Aqueous humor is the fluid that fills the front part of your eye, behind the cornea, known as the anterior chamber. The fluid acts to nourish the tissues in this area and removes waste products while also assisting in maintaining the shape of the eye.

Because your eyes constantly produce aqueous humor, it must be allowed to drain out of the eye. Drainage occurs at the anterior angle, which is the part of the eye where the fluid can leave the eye into the surrounding blood vessels. To maintain normal ocular pressure, the drainage system must work efficiently.

When aqueous humor is unable to drain correctly, eye pressure rises, leading to ocular hypertension, which raises the risk of damage to the optic nerve.

Symptoms of ocular hypertension

Ocular hypertension is a condition that usually has no obvious symptoms. As a result, it’s common to develop ocular hypertension without realizing it.

Treatment For Ocular Hypertension

Ocular hypertension by itself is generally not treated with eye drops or medication, and in most cases the eye doctor will observe your eyes closely to detect if the ocular hypertension is causing the first signs of glaucoma.

Patients with high IOP, without any signs of glaucoma are often referred to as ‘Glaucoma Suspect’ and require annual eye exams.

Once the eye doctor is concerned that the high IOP is leading to glaucoma, prescription eye drops are used to treat ocular hypertension. These drops will either help aqueous fluid drain from your eye or reduce the amount of aqueous humor produced by your eye.

Your eye doctor will most likely schedule a follow-up session a few weeks later to assess the effectiveness of the eye drops.

Additionally, because ocular hypertension raises the risk of glaucoma, it’s critical to see your eye doctor for an eye exam at least once a year or as adviced by your eye doctor.

Schedule an eye exam with Vision MD Eye Doctors in Glenn Dale. Our eye doctors can evaluate your ocular pressure and determine whether you have ocular hypertension.

At Vision MD Eye Doctors, we put your family’s needs first. Talk to us about how we can help you maintain healthy vision. Call us today: 301-779-0844 or book an appointment online to see one of our Glenn Dale eye doctors.

Want to Learn More? Read on!

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Q&A

How is ocular hypertension different from glaucoma?

Ocular hypertension occurs when a person has increased intraocular pressure without any optic nerve damage or vision loss. Glaucoma, on the other hand, is diagnosed once the pressure starts to damage your optic nerve. Glaucoma can eventually cause vision loss, including Tunnel Vision, or complete blindness, if left untreated.

How does ocular hypertension affect my visual health?

While ocular hypertension itself does not cause vision changes, it dramatically increases your chances of developing glaucoma. This is why it’s crucial to have comprehensive eye exams on a regular basis. During your exam, your eye doctor will perform a range of glaucoma tests to detect any changes to your optic nerve as early as possible..