Difficult, but not impossible. Scientists have come up with scenarios through which the first eye-like structure, a light-sensitive pigmented spot on the skin, could have gone through changes and ...

It's not always a sign of a serious condition and usually resolves within a few days or weeks with minimal treatment. Corneal abrasion (when scratches form on the part of your eye that covers the iris ...

Nocturnal geckos have superb vision in dim light - their eyes are 350 times more sensitive to colour at night than a human's (see for yourself with our animal vision interactive). Lacking eyelids, ...

The next time you get ready to head to the beach or ski slopes, take a moment to remember that eyes can get sunburned ... middle field of vision sensitivity to glare or light problems with night ...

and sensitive compared to the remainder of the facial skin, so getting sunscreen on/near the eyes can sometimes cause an irritation and/or burning sensation." "The burning is likely from a number ...