Raison d'etre

 
Many of us take our eyes for granted; only when  threatened with vision loss and partial or total blindness do we begin to realize what marvelous and valuable sense organs we possess. 
 
 
Although the human eye contains several types of tissue, perhaps the most crucial for producing clear images is the retina.  The retina is essentially a piece of brain tissue that projects through the back of the eye to receive input from the outside world – in the form of photons.  Processing of the photons detected by retinal photoreceptors gives rise to our perception of images, movement, life and love.



        



















Confocal Microscopy - Xenopus Photoreceptors