The Human Eye

by AllAboutTheJourney.org  

The human eye is enormously complicated - a perfect and interrelated system of about 40 individual subsystems, including the retina, pupil, iris, cornea, lens and optic nerve. For instance, the retina has approximately 137 million special cells that respond to light and send messages to the brain. About 130 million of these cells look like rods and handle the black and white vision.

The other seven million are cone shaped and allow us to see in color.


To continue click on the link below:

www.AllAboutTheJourney.org