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A dense white opacity of the cornea.
Synonym(s): leucoma.
[G. whiteness, a white spot in the eye, fr. leukos, white]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


A dense, white opacity of the CORNEA resulting from disease or injury. A leucoma near the centre of the cornea causes blindness, but vision can be restored by corneal grafting.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005


Dense, white, corneal opacity caused by scar tissue. A localized leukoma appears as a whitish scar surrounded by normal cornea. A generalized leukoma involves the entire cornea, which appears white, often with blood vessels coursing over its surface. Visual impairment depends on the location and extent of the leukoma. If the opacity is faint, it is called a nebula. Note: also spelt leucoma. See hyperacuity; corneal ulcer.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
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