sight

01/22/2012 - 23:10

The blind Mexican cavefish (Astyanax mexicanus) have not only lost their sight but have adapted to perpetual darkness by also losing their pigment (albinism) and having altered sleep patterns. New research published in BioMed Central’s open access journal BMC Evolutionary Biology shows that the cavefish are an example of convergent evolution, with several populations repeatedly, and independently, losing their sight and pigmentation.
 

12/16/2011 - 13:26

A transparent cornea is essential for vision, which is why the eye has evolved to nourish the cornea without blood vessels. But for millions of people around the world, diseases of the eye or trauma spur the growth of blood vessels and can cause blindness.

12/09/2011 - 19:22
Our senses of sight and hearing work closely together, perhaps more than people realize, a new UCLA psychology study shows.  The study appears in the December issue of Psychological Science, a journal published by the Association for Psychological Science.