The cornea is the clear layer covering the front of the eye. The cornea works with the lens of the eye to focus images on the retina.
Review Date 9/30/2018
Updated by: Audrey Tai, DO, MS, Assistant Clinical Professor (Voluntary), University of California - Irvine, Irvine, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.