Merck Frosst
Patients and Caregivers

Glaucoma

The Eye

Although small in size, the eye is considered one of the most complex and essential organs of the body. Its main purpose is to allow you to see and perceive the environment around you.

  Basic Anatomy

  How We See

Did you know that?The human eye evolved from primitive, light sensitive spots on the surface of invertebrates.

This site is for residents of Canada. / This site was updated on October 26, 2011.