Parts of the Eye and its Function 

If you are looking for information about the parts of the eye and its function, read on for the basics. This small, delicate organ features many important parts.

Part and Function

  • The cornea, a round transparent dome shaped covering, focuses light as it enters the eye. Divided into five parts, each part works together to protect the eye.
  • The iris is the part of the eye with the color in it. It lies in between the cornea and the crystalline lens. Basic colors are blue, green and brown and most people have a varying shade of one of these colors. The job of the iris to contract and expand to control how much light goes into the retina.
  • The uvea is the middle of the eyeball. It is constructed of three parts, the iris, ciliary body and choroid. Each part plays a specific role. 
  • The pupil is the center hole in the eye. This hole adjusts to be either bigger or smaller depending on the amount of light it detects.
  • The retina is the layer of the eye that is the furthest inside. This nerve senses the amount of light that is entering the eye. It is responsible for sending impulses through our optic nerves to the brain so that it can be translated into the images that we view.
  • The optic nerve connects the eye to the brain.
  • The white part of the eyeball is the sclera. Its job is to protect the nerves and provide a place for the muscles to attach that allow the eye to move.
  • The vitreous humor, a jelly-like substance is behind the lens and keeps the right amount of pressure and inflation in our eye.
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