Our eyes are marvellous sense organs that allow us to appreciate all the beauty of the world we live in, to read and gain knowledge, and to communicate our thoughts and desires to each other through visual expression and visual arts.
Vision is the most fundamental of our senses and it is perhaps the greatest tragedy of all when blindness robs us of this modality. Although all parts of the eye are important for perceiving a good image, the most vital layer for vision is the retina. The retina is essentially a piece of brain tissue that gets direct stimulation from the outside world's lights and images.
Understanding the organization of the vertebrate retina has been and is still the goal of many talented visual scientists over the years. Ramon y Cajal in the 19th century already presented the first comprehensive anatomic descriptions of the neural cell types that constitute the retina in a number of vertebrate species. There then followed an understanding of the role of visual purple in photochemistry and important psychophysical studies on image formation, light and dark adaptation and color vision.
We have tried to present material at the cutting edge of the present knowledge, but in a simple way that is accessible to both student, professional and non-expert people.
If you have questions, suggestion for improvements, or other useful comments, do not hesitate to contact us at the following addresses:Dr. Helga Kolb
Dr. Eduardo Fernandez
Dr. Ralph Nelson
Dr. Bryan Jones
Updated: July, 2011