Light rays enter the eye through the cornea, pupil and lens. These light rays pass through the vitreous, a clear gel like
substance that fills the middle of the eye. The light rays are focused on the retina, a light sensitive tissue lining the
back of the eye. The macula
is a very small area at the center of the retina that gives us our fine pinpoint central vision.
The area of retina surrounding the macula gives us our peripheral or side vision. The retina converts the light rays into
signals that are sent through the optic nerves to the brain.