Slide show: A look inside your eyes
The pupil, iris and sclera
Previous Next 4 of 7 The front of the eye

The front of the eye has major parts:

  • Sclera. This is the white part of your eye. It is a tough outer wall that helps protect the eye's delicate internal structures. A thin transparent tissue, called the conjunctiva, covers the sclera. Some of the blood vessels visible in the white part of your eye are located within the conjunctiva.
  • Pupil. This dark spot is an opening at the center of the iris. It allows light to enter the eye.
  • Iris. This is the colored part of the eye. It contains a ring of muscle fibers that expand or contract the size of the pupil to control the amount of light entering the eye.

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See more Multimedia March 31, 2022