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Can Cataract Surgery Prevent Dementia?

Cataract surgery is a highly successful procedure that removes cataracts, the cloudy formations on the eye’s lens that impair vision.

Now, researchers are discovering that vision loss may be linked to a higher rate of dementia and suggest that restoring clear vision (through cataract surgery, for example) may reduce the risk of developing dementia.

Is There a Correlation Between Cataracts and Dementia?

More than half of those 80 or older have had at least one cataract. Many people in this age range also have dementia, a decline in cognitive functioning.

But is there a connection between these two seemingly unrelated conditions?

Recent studies suggest that, yes, there could be a link. One 15-year study found that patients with age-related vision problems, including cataracts, had a higher incidence of dementia.

The 2021 study, published in the British Journal of Ophthalmology, followed 12,000 subjects aged 55-73. When compared to patients with healthy vision, cataract patients had an 11% higher incidence of dementia.

Can Cataract Surgery Prevent Dementia?

Can sight-saving cataract surgery reduce your risk of dementia? It certainly looks promising!

A 2022 study published in JAMA Internal Medicine found that removing cataracts was “significantly associated with a lower risk of dementia development.” In fact, patients who had undergone cataract surgery had a 29% lower rate of dementia.

In addition, MRI scans have shown greater brain activity following cataract surgery.

How Can Vision Loss Cause Dementia?

Scientists studying the link between vision loss and dementia suspect that vision loss negatively impacts the brain. They theorize that the more visual information we receive, the more active our brains are, and brain activity may be able to fend off dementia.

For this reason, by restoring clear vision, cataract surgery may stimulate the brain and prevent cognitive decline.

There could be an emotional and social dimension to cognitive decline as well. People who suffer from significant vision loss often feel isolated. They may feel discouraged by their inability to recognize faces or perform everyday tasks, and may avoid social interactions. According to the Centers for Disease Control, social isolation raises the risk of developing dementia by 50%.

If you have cataracts and you feel your quality of life is affected, schedule an appointment with Texas State Optical in Houston without delay. We’ll answer your questions about cataract surgery and ensure you receive optimal treatment.

Q&A With Our Optometrist

How is cataract surgery performed?

Cataract surgery is a short 30-40 minute procedure that replaces your cloudy, natural lens with a synthetic intraocular lens (IOL). First, the eye surgeon makes a hole in the cloudy lens and breaks it into tiny pieces. Next, the eye surgeon places the new clear lens onto the eye. You’ll be conscious throughout the surgery. The surgery is safe, effective and painless.

Is cataract surgery always successful?

Cataract surgery is highly successful, with a 99% success rate. Complications from cataract surgery are very rare.

June 27 Is National Sunglasses Day!

Monday, Jun 27, 2022 is National Sunglasses Day, so grab your favorite pair of sunnies and celebrate!

Many people think sunglasses are little more than a fashion accessory or a way to minimize glare while driving.

But the truth is that wearing sunglasses is vital if you want to safeguard your eye health and vision.

Why Sunglasses are Important

The number one reason to wear sunglasses is that they prevent ultraviolet (UV) light from entering your eyes.

UV light has been shown to age every part of the eye, from the delicate outer eye tissue to the tiny structures within the eye itself. Chronic UV exposure raises your risk of developing cataracts, age-related macular degeneration and corneal damage.

The skin on your eyelids is the thinnest skin of your body, and UV light exposure can further thin eyelid skin, leading to premature aging and the appearance of dark circles and under-eye bags. Additionally, wearing sunglasses can help prevent wrinkles because you’ll squint less in the sunshine. Who knew sunglasses can be a key player in your anti-aging routine?

Moreover, UV light has been shown to slow the cornea’s ability to heal itself, making sunglasses a medical necessity for people who’ve recently had eye surgery like LASIK, or those who frequently wear contacts (overwearing contacts can irritate the cornea).

Finally, sunglasses are a fun way to show the world your personality and accessorize any outfit.

Activities for National Sunglasses Day

Not sure how to celebrate National Sunglasses Day? Here are a few ideas you may enjoy.

Sport your favorite pair of sunglasses during an outdoor activity, whether it’s a barbecue with friends, a concert at a stadium or time spent in the park.

You can also celebrate National Sunglasses Day by gifting a pair of quality sunglasses to a friend, spouse or child!

No matter how you choose to celebrate National Sunglasses Day, we hope you enjoy and keep your eyes protected.

For all matters related to eye health, ​​Texas State Optical in Houston is here for you. Contact our eye doctor today!

FAQ With Our Optometrist

Should kids wear sunglasses?

Yes, children of all ages should wear sunglasses whenever they’re outdoors. In fact, it’s crucial because a child’s crystalline lens within the eye is much more clear than an adult’s, letting more light through. Contact us to learn more about kids’ eye health or to schedule an eye exam.

Can sunglasses block blue light?

Sunglasses with lenses that have a yellowish tint offer the most amount of blue light protection, from the sun and other sources. If you’re interested in blocking the blue light that’s emitted from your digital devices, speak with us to determine if computer glasses are right for you.

Could Working From Home Be Hurting Your Vision?

Working at home is a great way to ditch your commute and enjoy more flexible hours, but there can be an unexpected consequence—digital eye strain. If you’re like many workers, you probably spend most of your day on a computer or other digital device, and likely experience the headache, blurred vision, sore eyes or achy back so common with digital (computer) eye strain.

In contrast to being in the office, where workers take coffee breaks and socialize, working solo at home often translates into spending more time on the computer without breaks, and often beyond the typical 9 to 5 schedule. This can increase the likelihood of developing digital eye strain.

What Is Digital Eye Strain?

Digital eye strain, also called computer vision syndrome (CVS), affects an estimated 70% of adults, especially those between the ages of 18 and 34.The eye strain results from extended hours focusing on a computer screen, and may be worsened by hours of exposure to blue light, high-energy visible light emitted by digital screens.

Blue light can cause short-term eye strain and discomfort, and scientists are researching whether it could also be linked to serious eye conditions, such as age-related macular degeneration (AMD) and cataracts.

Moreover, staring at a screen, or even a printed book, causes people to blink up to 66% less often. Blinking is essential as it hydrates your eyes and stimulates the release of oil from the tiny glands in your eyelids. This oil also prevents tears from evaporating too quickly, thus drying out the eyes. Dry eyes can cause blurry vision, which further exacerbates eye strain.

What Are the Symptoms of Digital Eye Strain?

The following are common symptoms of digital eye strain:

  • Blurry vision
  • Eye soreness
  • Headaches Dry eyes
  • Light sensitivity
  • Neck, back and shoulder pain

How Can I Prevent Digital Eye Strain?

No need to ditch your job in order to avoid eye strain. There are other, more practical, ways to lessen the negative impact of screen time on our eyes. Below are some helpful tips.

Take Breaks

Even if you aren’t at the office and may not have co-workers to hang out with at the coffee machine or water cooler, make sure to take frequent breaks that don’t require screen time. Perhaps take a walk or reward yourself with a short nap. These breaks not only give your eyes a rest, but can rest your mind for a few minutes so you can work more efficiently.

Consider adopting the 20/20/20 habit. For every 20 minutes you spend in front of a screen, take a 20-second break and look at something 20 feet away. This will prevent you from overstraining your eyes and will encourage you to blink more, providing your eyes with much-needed hydration.

Adjust Screen Brightness

Bright screens can place a significant burden on your eyes. Simply adjusting your screen’s brightness can help rest your eyes.

See Your Eye Doctor

If you spend prolonged periods in front of the screen, it’s important to schedule an eye exam with your eye doctor to discuss whether you would benefit from lubricating eye drops or a pair of computer glasses. These computer glasses (or blue light glasses) allow your eyes to relax and make you feel as if you’re focusing on faraway objects. They also reduce glare and filter out blue light.

Whether you’re suffering from any of the symptoms related to digital eye strain or simply want to prevent it, we invite you to book an appointment with Texas State Optical in Houston. With the right eye care and work habits, you should be able to successfully and quickly reduce and prevent eye strain.

Q&A With Our Optometrist

How long does it take to recover from computer eye strain?

If you don’t have an underlying eye condition, symptoms of digital eye strain can sometimes disappear within a few hours or days. But if you have recurrent eye strain, speak with your eye doctor, as the right eye drops or computer glasses could improve your visual comfort and quality of life.

Can digital eye strain affect my work productivity?

You may think spending hours in front of a computer screen will improve your productivity, when in reality, it may have the opposite effect. According to a study at the University of Alabama/Birmingham School of Optometry, even minor vision problems, such as eye strain, disrupt worker productivity by at least 20%.

So make sure to take steps to control lighting and glare on the device screen and establish proper working distances and posture for screen viewing. To learn more and to alleviate or prevent eye strain, contact Texas State Optical today.

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 Houston 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 Houston 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 (713) 785-2022 or visit us in person at Texas State Optical, 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.

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. Ayesha Butt at Texas State Optical in Houston 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

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