Stereo Acuity and Summation: The Advantage of Two Eyes

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Frequently during eye exams, patients will notice they see better on the eye chart with two eyes open, and will try to sneak around the cover paddle to get to two eyes ASAP. We are well familiar with the mathematical rule, the whole is not greater than the sum of its parts, but eyes are an exception to this rule. Summation describes the brain’s ability to add the vision from each eye in order to produce better visual acuity than one eye provides alone. As a result, the exam chart may read something like this:

20/20 Right(OD), 20/20 Left(OS), 20/15 Both(OU)

Stereo acuity, or 3-D vision, is another binocular (when two eyes work together) visionprocess. Because the eyes are physically separated by space, they view object from a different angle, and the brain can then interpret depth. For example, those of you without stereo cannot appreciate 3-D puzzles and movies.

Eye conditions that can limit summation and stereo acuity include refractive error, amblyopia, monovision, esotropia, exotropia and a host of possible medical eye concerns.

We advise all minions, one and two-eyed, to have regular eye exams.

From the eye doctors, opticians and staff at Rinkov Eyecare Centers. We’ve provided comprehensive eye exams, contact lenses, eyeglasses, sunglasses and medical treatment of eye disease such as cataract treatment in Columbus, Ohio, for over 35 years. Come see an optometrist at one of our Columbus locations – Downtown, West, East, Westerville, Dublin, Bexley, Worthington and Nationwide Plaza.

Eye boogers!

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You know that stuff you wake up with in the corners of your eyes? Some might call it sleep, eye boogers, mattering, or just plain old crusty stuff. Whatever you call it, most of us have it in the morning, so what is it exactly?

This discharge, known as rheum, is nothing more than a combination of mucus, oil, dead skin cells and other debris such as makeup or dust that accumulates in the corners of the eyes and lash lines while you sleep. Normally we remove excess mucus, oil and debris after each blink, preventing them from accumulating. However, we aren’t blinking while we sleep, which means that the debris forms the eye boogers we find in the morning.

Sometimes people mistake this crusty stuff as discharge from an infection. While a little mucus in the morning is normal, there may be something else going on if the consistency or amount changes. There are different types of discharge with different causes. Conditions like conjunctivitis (pink eye), blepharitis, sties and dry eye can all produce discharge along with other symptoms. You should schedule an appointment with your eye care professional if you experience any out-of-the-ordinary symptoms.

From the eye doctors, opticians and staff at Rinkov Eyecare Centers. We’ve provided comprehensive eye exams, contact lenses, eyeglasses, sunglasses and medical treatment of eye disease such as cataract treatment in Columbus, Ohio, for over 35 years. Come see an optometrist at one of our Columbus locations – Downtown, West, East, Westerville, Dublin, Bexley, Worthington and Nationwide Plaza.

What is Snow Blindness?

Snow blindness is like sunburn for your eyes.

Snow blindness is like sunburn for your eyes.

Did you know that spending a day outside in winter could be worse on your eyes than a day at the beach?  Snow can reflect up to 85% of UV rays from the sun.  UV reflection from snow, streets and vehicles can cause glare, impair vision and damage the eyes.  Studies show that UV exposure contributes to cataracts and increases the risk of macular degeneration.  Excessive exposure to reflected light on the snow can also damage the cornea and conjunctiva and cause photokeratitis, more commonly known as snow “blindness.”

Think of photokeratitis like a sunburn to the eyes.  Symptoms include increased watering, pain, light sensitivity and the feeling like there is sand in your eyes.  Treatment includes artificial tears, cool compresses and pain medication.  Typically, symptoms resolve anywhere within a few days to a week.

UV protection, specifically polarized sunglasses, is the best preventative measure to combat glare and prevent UV damage to the eyes.  Polarized sunglasses are better than regular sunglasses because they contain a special filter that blocks reflected light, which, in turn, reduces glare.  Ask your eye doctor about prescription polarized sunglasses or non-prescription polarized sunglasses if you wear contact lenses.

From the eye doctors, opticians and staff at Rinkov Eyecare Centers. We’ve provided comprehensive eye exams, contact lenses, eyeglasses, sunglasses and medical treatment of eye disease such as cataract treatment in Columbus, Ohio, for over 35 years. Come see an optometrist at one of our Columbus locations – Downtown, West, East, Westerville, Dublin, Bexley, Worthington and Nationwide Plaza. 

Juvenile Xanthogranuloma and Eye Health

Regular eye exams can monitor ocular involvement of juvenile xanthogranuloma

Regular eye exams can monitor ocular involvement of juvenile xanthogranuloma.

Juvenile xanthogranuloma is a relatively uncommon dermatological condition that appears in early childhood. Typically, these skin legions are firm and dome-shaped. While the legions may appear red at first, they usually progress to an orange-ish brown shade later on.

While juvenile xanthogranuloma is benign, it is possible to develop the legions on or near the eye, affecting the iris, retina and eyelid. It is important that patients with this condition be monitored once every three months, up to the age of three, in order to detect any ocular involvement. In fact, most eye-related symptoms occur before patients are two-years-old.

If your child has been diagnosed with juvenile xanthogranuloma, it is important to speak with your child’s eye care professional to understand the complications this condition may cause. Ocular legions will need to be addressed if they lead to visual problems. Typically, only one eye is affected, but if left untreated, ocular juvenile xanthogranuloma can cause glaucoma, corneal blood staining, hyphema, cataract development, vascular occlusion and retinal detachment. It is possible that complications can lead to amblyopia and eventual blindness.

From the eye doctors, opticians and staff at Rinkov Eyecare Centers. We’ve provided comprehensive eye exams, contact lenses, eyeglasses, sunglasses and medical treatment of eye disease such as cataract treatment in Columbus, Ohio, for over 35 years. Come see an optometrist at one of our Columbus locations – Downtown, West, East, Westerville, Dublin, Bexley, Worthington and Nationwide Plaza. 

Aging Eyes and Drooping Eye Lids

Many years ago, as my dad entered middle-age, my brother and I often teased him about his growing waistline. My dad would always defend himself, naming Dunlap’s Disease as the culprit.

“It’s Dunlap’s Disease! My belly has done lapped over my belt!” he explained.

My dad said many strange things that have stuck with me through the years, and now, as I enter middle-age, it appears he has stuck me with something else: Dunlap’s Disease must be genetic, because I am starting to show signs and symptoms.

blepharochalasis

In the picture above, you can see the upper eyelid has done lapped over the lashes. Dermatochalasis—or blepharochalasis when referring specifically to the eye—is an age-related condition that causes folds of skin to lap over and weigh the eyelid down. It is a common cause of ptosis, which is the medical term for drooping eyelids.

Patients who have this condition will experience blurred vision, visual interference from the eyelashes, and/or “blocked” vision, which results in visual field defects. This condition typically requires surgery to build up the muscles of the eye, effectively lifting the skin to clear the visual field.

There are many other causes of ptosis, which can be much more sinister. These causes are usually due to systemic difficulties such as a stroke or trauma to the eye, among others. If you are experiencing symptoms of ptosis, you should have a discussion with your eye care practitioner to find the cause and the appropriate remedy.

From the eye doctors, opticians and staff at Rinkov Eyecare Centers. We’ve provided comprehensive eye exams, contact lenses, eyeglasses, sunglasses and medical treatment of eye disease such as cataract treatment in Columbus, Ohio, for over 35 years. Come see an optometrist at one of our Columbus locations – Downtown, West, East, Westerville, Dublin, Bexley, Worthington and Nationwide Plaza. 

 

How to Have Healthier Eyes in 2015

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We promise this resolution is easy!

We promise this resolution is easy!

Now that the New Year is under way, many people are working on their New Year’s resolutions. You may be working on getting fit, getting organized or getting your finances in order, but there is one easy resolution you probably forgot about: taking better care of your eyes. By making a few minor changes, you will be crossing this resolution off your list in no time.

 

  1. Schedule a yearly eye exam

A yearly eye exam is the first step to better eye health and it is essential to catching any early signs of eye disease. Many feel if they are seeing well, an eye exam is not necessary. This is not true, because many eye diseases do not show symptoms until it is too late. In addition, annual eye exams can alert your doctor to changes in your overall health.

  1. Wear your sunglasses

Sunglasses are not just a fashion statement, nor are they just for people who need prescription sunglasses. Your shades help to shield your eyes from UV radiation, which can contribute to cataracts, macular degeneration, and cancers of the eye. They can also protect your eyes from particles in the air.

  1. Follow your contact lenses’ directions

For those who wear contact lenses, you can drastically improve your eye health by simply following the directions for your contact lenses. Most people wear their contact lenses longer than what is recommended by their eye doctor every day. By following your optometrist’s recommendations, you can drastically reduce discomfort and risk of infections from over-wearing your contact lenses. Many contact lens wearers fail to replace their contacts on the schedule prescribed. Wearing your contact lenses past the replacement date makes you much more vulnerable to eye infections and permanent scarring of the cornea. If you’re running low on your contacts, make sure you have a current prescription and order new ones ASAP. 

By following these three simple steps, you will be able to cross this resolution off your list. These minor changes will not only lead to healthier eyes, but a healthier you.

From the eye doctors, opticians and staff at Rinkov Eyecare Centers. We’ve provided comprehensive eye exams, contact lenses, eyeglasses, sunglasses and medical treatment of eye disease such as cataract treatment in Columbus, Ohio, for over 35 years. Come see an optometrist at one of our Columbus locations – Downtown, West, East, Westerville, Dublin, Bexley, Worthington and Nationwide Plaza. 

Dry Eyes and Winter Weather

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Winter is officially here, and some individuals may already be plagued by dry eyes. In fact, many people with dry eye will find that the symptoms get worse this time of year. The cold, low humidity air dries the eyes out when going outdoors, and inside, heaters trap us in a dry environment day and night. Even our car heaters can exacerbate dry eyes. Contact lens wearers generally experience more discomfort than those without contacts.

Symptoms of dryness include watering, burning, irritation and redness. While these symptoms can be resolved, if left untreated, they can turn into a chronic condition known as dry eye syndrome.

There are multiple things you can do to combat dry eyes in the winter. Using artificial tears prior to going into conditions that will dry out your eyes can greatly reduce symptoms. However, exercise caution when using over-the-counter tears: some only mask the symptoms and can lead to more irritation issues later. Check with your eye care professional to find out which artificial tear works best for you. In addition to artificial tears, humidifiers can help restore moisture in the air inside your home and work. By combating dryness in the air, you will give your eyes some relief. Finally, sun protection or googles can prevent cold air, snow and other particles from irritating the eyes.

If these tips don’t adequately control the dryness, your eye doctor can discuss other treatment options that may be available to you. You don’t have to suffer with dry eye this winter—come see your Rinkov Eyecare optometrists today!

From the eye doctors, opticians and staff at Rinkov Eyecare Centers. We’ve provided comprehensive eye exams, contact lenses, eyeglasses, sunglasses and medical treatment of eye disease such as cataract treatment in Columbus, Ohio, for over 35 years. Come see an optometrist at one of our Columbus locations – Downtown, West, East, Westerville, Dublin, Bexley, Worthington and Nationwide Plaza. 

CARE : 20|20 : LIFE®

*this advice is general in nature and does not constitute an exam. For specific advice, see your eye doctor or healthcare professional.*

Is online shopping affecting your eyes?

Now that holiday shopping is in full force, online shopping can be good for your wallet but bad for your eyes. Excessive near vision tasks, such as working on a computer, can cause strain on the focusing system of the eyes, causing eye fatigue, blurred vision and headaches. Electronic devices, such as computer monitors, mobile phones and tablets, emit high-frequency UV rays known as blue light. Studies show blue light can irritate the eye, cause damage to the retina, and disrupt sleep cycles.

If you spend time in front of a digital device, your eye doctor can help combat the effects of blue light. Glasses with specially manufactured lens coatings that help block blue light and reduce glare can significantly improve computer vision. With the proper eyewear, you can have healthier, more comfortable eyes. Talk to your eye care professional about how computer glasses can improve and protect your vision. Call any of our eight locations to schedule your 20-Point Comprehensive Examination™ today!

From the eye doctors, opticians and staff at Rinkov Eyecare Centers. We’ve provided comprehensive eye exams, contact lenses, eyeglasses, sunglasses and medical treatment of eye disease such as cataract treatment in Columbus, Ohio, for over 35 years. Come see an optometrist at one of our Columbus locations – Downtown, West, East, Westerville, Dublin, Bexley, Worthington and Nationwide Plaza. 

CARE : 20|20 : LIFE®

*this advice is general in nature and does not constitute an exam. For specific advice, see your eye doctor or healthcare professional.*

 

Ocular side effects of amiodarone

ocular side effects of amiodarone

Amiodarone is a systemic medication that is used to treat cardiac arrhythmias. It can have many side effects, but a common effect on the eye is a condition called vortex keratopathy. In vortex keratopathy, deposits are formed in the cornea that can commonly cause glare and irritation. This glare and irritation tends to increase with continued use. The best way to treat the keratopathy is to decrease the dosage, but this is not always an option. In those cases, the keratopathy can be treated with lubricants and glare protection, but this solution may not always work. Amiodarone may also lead to optic neuropathy, retinopathy and caratacts, as well as mask many other underlying eye disorders. It is important to maintain regular evaluations to monitor the progression of the keratopathy, as well as monitor for development of more serious complications.

If you are taking Amiodarone, be sure to schedule regular visits with your eye doctor to maintain optimal eye health.

From the eye doctors, opticians and staff at Rinkov Eyecare Centers. We’ve provided comprehensive eye exams, contact lenses, eyeglasses, sunglasses and medical treatment of eye disease such as cataract treatment in Columbus, Ohio, for over 35 years. Come see an optometrist at one of our Columbus locations – Downtown, West, East, Westerville, Dublin, Bexley, Worthington and Nationwide Plaza. 

CARE : 20|20 : LIFE®

*this advice is general in nature and does not constitute an exam. For specific advice, see your eye doctor or healthcare professional.*

Preventing nearsightedness in children

Preventing Nearsightedness in Children

Peripheral defocus is a hot topic in the prevention of myopia (nearsightedness) in children. Peripheral defocus comes from the concept that the entire back surface of the eye is not in focus at any one time for someone to see. Even if the central retina is in focus, the peripheral retina may be under or over corrected. Research is being conducted to see if controlling the peripheral defocus may control myopia and aid in nearsightedness control. Researchers are also trying to detect if hyperopic defocus or myopic defocus may be a marker for future development of myopia. Many studies have been designed to test if altering the peripheral defocus with different types of lenses or contact lenses may have an impact on peripheral defocus and in slowing myopic progression. Previous studies involving single vision lenses, soft contacts and RGPs have shown varied results. In 2013 a study by Berntsen found that progressive lenses caused a superior myopic shift in peripheral defocus and less central myopic progression in children. Further studies have found that soft multifocal contact lenses may also have the ability to slow myopia progression. If further research continues to show a decrease in myopia, progressive lenses, anti-fatigue lenses and soft multifocal contact lenses may be a useful tool in slowing myopia progression in at-risk children.

Stay proactive with your child’s eye health. Contact your child’s eye doctor to schedule his or her next annual eye exam.

From the eye doctors, opticians and staff at Rinkov Eyecare Centers. We’ve provided comprehensive eye exams, contact lenses, eyeglasses, sunglasses and medical treatment of eye disease such as cataract treatment in Columbus, Ohio, for over 35 years. Come see an optometrist at one of our Columbus locations – Downtown, West, East, Westerville, Dublin, Bexley, Worthington and Nationwide Plaza. 

CARE : 20|20 : LIFE®

*this advice is general in nature and does not constitute an exam. For specific advice, see your eye doctor or healthcare professional.*