Keratoconus

Injury	Disease	Nutrition	Poison

Symptoms	Surgery	Test	Special Topic

Cornea

Overview

Symptoms

Treatment

Prevention

Keratoconus

Symptoms:

The earliest symptom is subtle blurring of vision that is not correctable with glasses. (Vision is generally correctable to 20/20 with gas-permeable contact lenses.)

Signs and tests:

Keratoconus can usually be diagnosed with slit-lamp examination of the cornea. Early cases may require corneal topography, a test that involves making a stereo image that gives a topographic map of the curvature of the cornea.

When keratoconus is advanced, the cornea may be thinner in areas. This can be measured with a painless test called pachymetry.

Review Date: 10/31/2004
Reviewed By: Edward B. Feinberg, MD, MPH, Professor and Chair, Department of Ophthalmology, Boston University School of Medicine, Boston, MA. Review provided by VeriMed Healthcare Network.

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