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So far Dana has created 31 entries.

The Science of Eye Color

Human eye color has always been fascinating and mysterious. Babies are usually born with blue eyes. Those mostly change within the first three years to other colors. Some people have different colored eyes; they were celebrated back in July with “Different Colored Eyes Day.” Some emotions can cause the eyes color to change, such as when you’re angry.

Scientists still don’t know why some people’s eyes are a certain color. It is known that human eye colors originate with three genes, obviously passed down from your parents. Thing is, only two of those three genes are understood. Those two give people the common eye colors of green, blue, and brown. But scientists don’t understand why other people have gray, hazel, or eyes with multiple colors in them.

Back in the 60s the common thinking was that brown eyes were “dominant” gene […]

Study Shows Generic Glaucoma Drugs Improve Medication Adherence

Every penny counts, even for a thing as serious as treating your glaucoma.
That’s the finding of a study published earlier this year in Ophthalmology, the journal of the American Academy of Ophthalmology. Researchers from the University of Michigan found that medication adherence improved by 25 percent or greater in patients who had been switched to generic glaucoma drugs instead of higher priced brand name drugs.
Glaucoma is the leading cause of irreversible blindness worldwide, affecting over 2.7 million Americans aged 40 and older and 64.3 million people globally. It is an eye disease that damages the optic nerve, which carries the information from the eye to the brain. If those signals don’t get through, the person can’t see. The disease is thought to be caused by high intraocular pressure in the eye.
Drugs (called prostaglandin analogues or PGAs) […]

iPad May Become EyePad for Remote Glaucoma Screening

While you aren’t likely to see many people in Nepal playing Candy Crush on an iPad®, you could see iPads® there in the not too distant future. But they won’t be used for entertainment: they’ll be used to screen for glaucoma.

This could be the result of a study presented at the American Academy of Ophthalmology AAO 2014 conference in Chicago. The study used iPads and a peripheral vision assessment app to screen 200 patients in Nepal for glaucoma. The findings showed promise for the potential of using iPads to screen populations at high risk of developing the disease, but with no access to traditional eye care.

Why would this be important? Glaucoma is the second leading cause of blindness across the globe, affecting over 60 million people. The degenerative eye disease can be effectively treated, if it is diagnosed early. […]

Long Eyelashes May be Short on Protection

You know the movie scene — the blond bombshell bats her long eyelashes at the man across the crowded room. He is helpless to resist her advances as those long eyelashes, seemingly the length of palm fronds, open and close to reveal her warm brown eyes.

Problem is — those long eyelashes of hers aren’t protecting her eyes as well as shorter lashes would.

At least that is the finding of Dr. David Hu and researchers from the Georgia Institute of Technology (GIT), who published a study in February in the Journal of the Royal Society Interface finding that eyelashes of a length around one-third the width of the eye are optimum for the greatest eye protection.

There have been many hypotheses about the role of eyelashes. Some have guessed they shade the eye from the sun. Others have thought they are […]

Tired of Your Myopia? Get a New Set of 3D Printed Eyes

If Italian researchers at research studio MHOX are correct, by the year 2027 you’ll be able to say goodbye to your contact lenses, eyeglasses, glaucoma, cataracts, and any other eye/vision condition. How? By replacing your natural eyes with a pair of completely artificially constructed, 3D printed eyeballs.

While you may scoff — your home printer often seems incapable of printing a single photo with any semblance of quality — 3D printers have already created prosthetics and bone replacements that are more customizable and affordable. Creating organic, functional body parts doesn’t seem that far fetched.

MHOX partner and lead designer Filippo Nassetti explains the logic, “Latest developments in bioprinting and biohacking let us imagine that in the near future it would be possible to easily print organic, functional body parts, allowing the human to replace defective districts or enhance standard performance.”

The MHOX […]

If You’re Over 40, Say Hello to Presbyobia

With age may come wisdom, but it also brings an assortment of issues with your body: wrinkles, joint pain, age spots, even cataracts.

And, when you pass 40, usually presbyopia.

Presbyopia is a natural consequence of aging, this time of the eye. Presbyopia is not a disease; it is the loss of the eye’s ability to change its focus in able to see objects that are near. It generally starts to appear at the age of 40 in most people.

In your youth, the lens in your eye is soft and flexible; it changes shape easily, which is how you focus on objects both up close and far away. But, after you turn 40, the lens becomes less flexible, more rigid. It can’t change shape as easily as it did in your younger days, so it becomes much more difficult to see […]

You Are What You Eat — Can the Foods You Eat Improve Your Eyesight?

Since you were little, your Mom told you to eat your carrots. “They’ll help you see better,” she said.
Is this true? Can you get Superman’s x-ray vision simply by eating enough carrots to make you feel like a character from Watership Down? Although not directly correlated to improved vision chart success, the overall answer is that you should listen to your Mother. The right foods do help protect the health of your eyes.
Unlike foods that can instantly give you more energy or help build muscle tone and the like, foods that benefit your eyes serve a protective function, keeping them healthier and helping them ward off vision problems. Nutrients such as omega-3 fatty acids; lutein; zinc; and vitamins A, C, and E have all been shown to be beneficial for your eyes. Where can you get these nutrients? […]