Eye. Historical illustration of a cross-section showing the anatomy of a closed human eye. Front is at left. Light entering an eyeball is refracted by the transparent cornea and is then immediately focused by the lens (disc-shaped) that lies behind the cornea. The focused light produces electrical impulses in the light-sensitive retina inside the eyeball. The impulses are transmitted to the brain via the optic nerve (running right from the back of the eyeball). From a German encyclopedia,Bilder Atlas,by Johann Georg Heck,1860 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Terry, Sheila |
Taille de l’image : | 3500 px × 2750 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |