Cataract Question (8)

How the Eye Works?

#The diagram above shows the main parts of the eye.

#The cornea is the clear covering of the front of the eye.

#The sclera is the "white part" of the eye.

#The iris is the "colored part" in the center of the eye that works like a round muscle, expanding and contracting to control the amount of light coming in.

#The pupil is the "black center" of the eye, simply a hole created by the iris.

#Behind the pupil is a clear lens that directs light to the back of the eye.

#At the back of the eye are light-sensitive nerves called the retina.

#The center of the retina is called the macula.

#Behind the macula, the optic nerve takes nerve impulses to the brain where they translated and understood as "vision."

The eye itself does not actually do the seeing. Rather, the eye acts as a messenger that delivers light "messages" to your brain. Your brain translates these messages into something you understand as vision, allowing you to maneuver within your environment without bumping into things and to enjoy our lovely Arizona sunsets.

In regards to cataract surgery, our primary focus is on the lens inside the eye, called the "crystalline" lens, held inside a suspended bag, called the posterior capsule.