Eye Function
Chicago, Illinois
If you learning about the structure of the eye, it helps you to understanding how the eye works. I like to compare the eye to a camera. Light rays enter the eye through the cornea, are focused by the cornea and lens on to the retina which acts like the film of the camera in the back of the eye.
The point of entry for light is the cornea where about two thirds of the focusing power of the eye occurs. Light then passes through a hole in the middle of the iris (the pupil) to be focused by the lens on to the retina in the back of the eye. The lens of the eye focuses light by adjusting the thickness of the lens. The light stimulates the rods and cones of the retina that converts light into a signal that travels to the brain where it is processed in to sight.
As you get older, the lens of the eye becomes less flexible and eventually is unable to focus on to objects up close. This is called Presbyopia or aging eyes and everyone who has good vision for distance will eventually need glasses for up close because of the decreased flexibility of the lens of the eye.
Two Locations:
Doctors for Visual Freedom Laser Center
875 North Michigan Avenue, Suite 1550
Chicago, IL 60611 | Doctors for Visual Freedom Laser Center
2010 S Arlington Heights Rd, Suite 121
Arlington Heights, IL 60005 |
