This is why scientists can not «prove» the evolutionary development of the eye (and we know that the real chance of finding fossil evidence is much lower than 50 %). (religion.blogs.cnn.com)
Albino is the result of a defective pigment gene that also produces abnormal development of the eyes. (yourpurebredpuppy.com)
By comparing the structures and embryological development of the eye in vertebrate species, however, researchers have gained key insights into the organ's origin, as this article in the July issue of Scientific American explains. (scientificamerican.com)