Archive for the ‘Eyesight’ Category

Pediatric Pink Eye

Friday, August 13th, 2010

Your child wakes up in the morning and cries out because she cannot open her eyes.  You run to her and notice a thick lining of mucus along her eyelids.  You wipe off her eyes with a damp towel and inspect further – what are normally the “whites” of her eyes are now an angry red.  What is going on here?  Should you call the doctor?  What’s your next course of action?  Can your kid still go to school?


First things first – your child has the textbook symptoms of pink eye.

Wait… pink what?

“Pink eye,” a lay term for conjunctivitis, is an inflammation of the conjunctiva, the clear tissue covering the white of the eye and the inner eyelids.  Inflammation of the eye causes redness, hence the name pink eye.  The inflammation can be caused by an incredibly wide variety of conditions, including something in the eye, chemical irritation, trauma, uveitis (an inflammation of the eye that extends inside the eye), episcleritis (inflammation of the surface of the eye) , allergy, viral infection, bacterial infection, and inflammation of the eyelids (blepharitis).  More serious conditions inside the eye can also cause a red eye, such as endophthalmitis (infection inside the eye) and tumors.  The most common types of conjunctivitis in children won’t  cause any long-term visual damage, and will go away on their own.

Why does your child have it?

It’s pretty hard to tell what kind of conjunctivitis your kid has just by looking at the eye, but maybe this will help:  viral conjunctivitis has  a mild amount of watery discharge, whereas bacterial conjunctivitis has a small amount of white or yellow or green discharge.  Allergic conjunctivitis has a great deal of watery discharge in many cases.

There are many possible ways your child could have contracted pink eye. The source could be from everyday bacteria and viruses to allergens and irritants in the environment (such as chlorine and smoke).  Everything your child touches with their hands can be easily transferred to the eye, resulting in irritation, and then inflammation.

What should you do?

If your child has white or yellow or green discharge from the eye rather than clear, take her to the pediatrician or ophthalmologist for evaluation.  If the discharge is clear but the eye is incredibly painful, take her to the pediatrician or ophthalmologist.  If the eye is itchy or mildly irritated and has a clear discharge, care for it as below and wait a couple of days to see if it begins to improve.  Viral conjunctivitis is like a common cold of the eye.  It may look bad, but it clears on its own rapidly after passing to the other eye and everyone your child knows!  (Or at least it can seem that way.  See below how to lessen the spread.)

Treatment is generally uncomplicated.  Antibiotics treat bacterial pink eye.  Allergy medications treat allergy-induced pink eye.  Viral pink eye normally goes away on its own, and antibiotics are not necessary.

What can you do immediately to lessen the symptoms?

A clean, cool, moist towel can help soothe irritation and pain.  This can also be used to remove the crusty discharge that clings to the eye in the morning. The moist towel should soften the dried discharge.  Then you can use a cotton ball or q-tip to clean the edges of the eyelid.  One MAJOR point to remember: always fully wash and sanitize your own hands after cleaning your child’s eye or touching the washcloth that touched her eye – DON’T touch your eyes until you’ve washed your hands.  Pink eye can be extremely contagious.

Can your child still go to school?

Unfortunately, not if your child has viral conjunctivitis.  Since viral pink eye is extremely contagious, schools require a doctor’s note before your child can resume classes.

What can I do to prevent my child from getting pink eye again?

One of the best ways to reduce the likelihood that your child will contract pink eye is to reinforce hand-washing and to teach them to keep their hands away from their face and eyes.  As a parent, I know this is easier said than done!  Cutting down on sharing of towels, pillows and other near-face items also helps prevent contamination.

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“Get the Red Out” Drops – Not as Great as You Think

Wednesday, August 11th, 2010

You’ve all seen the commercials for different drops available to “get the red out” of your eyes and you may have used them on yourselves and your kids – from Visine to Clear Eyes to Rohto and many more.  These drops seem great because they promise to eliminate the symptoms of red eyes, but are you aware of their side effects?

The active ingredient in “Get the Red Out” drops is a vasoconstrictor, which makes blood vessels shrink temporarily.  The problem is something called “reflex vasodilation.”  When the drop wears off, the constricted blood vessels relax, often bigger than before.  This may make you want another dose to achieve that whiteness again, and when that dose wears off, your eyes will be even redder, again.  So the vicious cycle goes, on and on.

Contact lens users really shouldn’t use “get the red out” drops.  Since contact lenses already significantly reduce oxygen flows to the eye, adding a vasoconstrictor drop into the mix only makes your eyes drier (narrowing blood vessels leads to less oxygen delivered to the tissues).

While these drops are good for an immediate aesthetic touch-up for special occasions such as a headshot or big event, I don’t recommend using them on a daily basis.  Don’t get trapped into rebound redness that leads you to reach for more drops and leaves you in a vicious cycle – it is possible to become extremely dependent.  Over time, the blood vessels in your eye will get damaged and your eyes will only get redder with continued use.

I recommend artificial tears like Systane or Theratears.  While artificial tears do not necessarily get the red out, they will most likely wash out what’s irritating your eyes and therefore what’s causing the redness.

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Sources:

http://eyedocdeviney.com/2010/04/14/be-careful-with-get-the-red-out-drops/

http://healthmad.com/conditions-and-diseases/should-you-use-visine-eye-drops-if-you-have-dry-eyes/

http://www.allaboutvision.com/conditions/dryeye.htm

Shades that Float!

Monday, August 9th, 2010

Remember my tips for Healthy Eyesight? One of the most important ways to protect your vision, especially here in San Diego, is to make sure you wear UV-protective eyewear at all times when outside or driving.   Why?  I’ve seen so many people here with conditions like pingueculum and pterygium caused by years of sun exposure, and those who go out on the water frequently get the biggest dose of those damaging UV rays.

Maybe you’d like to wear sunglasses when you’re out on the water but are sick of losing your favorite shades when you’re boating or waterskiing.  Don’t lose your sunglasses in the water again.  Jet ski world champion Tommy “the Bomber” Bonacci has patented and released a line of “Bomber” sunglasses that are created specifically for active sports in and out of the water.

What makes them so great? They come with a patented foam lining – this means that they float even when they fall off into the water.  The foam also lends cushion to the frame so that the shades fit snugly against your head.  The snug fit keeps the sunglasses on better, and keeps more of the sun and wind out of your eyes.  The lenses are polarized and the manufacturer says they carry 100% protection from UVA and UVB rays and are shatterproof.

Whether you’re an active sports enthusiast or not, these floating shades seem to be pretty handy in the water and great for protecting your eyes!

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Gaga Eyes – This Doe-Eyed Trend May Be Dangerous

Sunday, August 8th, 2010

Whether you love her or hate her, no one can deny Lady Gaga’s extraordinary impact upon the music and fashion world.  Thousands of adoring fans across the globe have followed in her platform-heeled footsteps by donning blonde wigs, leotards and feathered headdresses.  However, be warned: one of her latest fashion trends has recently been reported to cause damage to devoted fans’ eyes.

Circle contact lenses (cosmetic contact lenses that enlarge the appearance of the iris by extending the colored part of the eye over the white of the eye) have grown in popularity as fans have clamored to mimic the doe-eyed look Gaga displays in her music video “Bad Romance.”  Despite the fact that purchasing contacts without prescriptions is illegal in the US, young women have been purchasing them online from Japan, Korea and Singapore, where they originated in popularity due to their anime-like quality.

While they may look appealing, the FDA cautions consumers from purchasing and using decorative contact lenses that have not been prescribed and fitted by an eye doctor.  By doing so, patients put themselves at risk for multiple eye problems: corneal swelling and ulcers due to contacts that are too tight and redness and irritation due to contacts that are too loose.  The most serious danger from these contacts is the risk of infection – uncontrolled infection can lead to scarring of the cornea, vision impairment, and in some extreme cases can result in blindness.

Gaga is popular for her wild, risky fashion sense, but circle contacts are a trend that might be a little too harsh on the eyes.  Take advice from the CDC, which tells costume-wearers to lower their risk for serious eye injury by not wearing decorative contact lenses.  In fact, why not skip out on contact lenses completely with LASIK?  Perfect vision and healthy eyesight is more than a trend, it’s timeless and far less outlandish.

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Sources:

http://articles.latimes.com/2010/jul/14/news/la-heb-lady-gaga-contacts-20100714

http://www.fda.gov/MedicalDevices/Safety/AlertsandNotices/PublicHealthNotifications/UCM062171

http://www.cdc.gov/family/halloween/

http://newsfeed.time.com/2010/07/07/bad-romance-lady-gaga-fans-rush-to-buy-dangerous-contact-lenses/

http://www.totalbeauty.com/news/make-up/eye-makeup/lady-gagas-big-doe-eyes-makeup-tips-dangerous-contacts-1278562030