Vision Change Home page Send to a friend Print this page Search for new topic
Definition
Symptoms
Evaluation
Treatment
specialist
Home Care
warning signs
Underlying Cause
Anatomy
Trusted Sites
 Visit Virtual Doctor
Vision Change Anatomy
To better understand vision change, it helps to understand the anatomy of the eye.

Structures of the eye include:
  • Bony orbit and extraocular muscles: Images
    • The bone around the eye that protects it and the muscles that move the eyeball in the socket
  • Conjunctiva: Images
    • The thin, clear membrane that covers the white part of the eye, as well as the inside surface of the eyelids
  • Sclera: Images
    • The strong, white, outer layer of the globe
  • Cornea: Images
    • The clear, firm cap that protects the pupil and the iris
  • Pupil: Images
    • The opening that allows light to pass to the lens
  • Iris: Images
    • The colored part of the eye that controls the size of the pupil
  • Lens of the eye: Images
    • The clear, soft disc that receives light through the pupil and focuses images on the retina
  • Ciliary body: Images
    • Contains muscles that control the shape of the lens.
  • Vitreous: Images
    • The clear gel inside the globe that helps to maintain the shape of the eye
  • Choroid: Images
    • The thin layer that contains blood vessels that supply the parts of the eye
  • Retina: VideosImages
    • The retina is to the eye what film is to a camera. It is a thin membrane in the back of the eye that contains the rod and cone cells for vision. After receiving light, the retina sends messages to the brain though the optic nerve. This information is processed into images by the brain.
Continue to Vision Change Trusted Sites
View more Vision problems topics
Related Topics:

Visit Virtual Doctor
About freeMD FAQ Terms of Use New Visitor Feedback
freeMD is provided for information purposes only and should not be used as a substitute for evaluation and treatment by a physician. Please review our terms of use.

Last Updated: Nov 4, 2008  References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
Copyright 1989-2008 DSHI Systems, Inc.   Powered by: freeMD
Site Map
Vision Change References: