Mechanisms of visual loss in corneal edema
L. G. Carney and R. J. Jacobs
Although visual disability from corneal edema is a well-recognized clinical
finding, it is not easily confirmed by routine visual assessment. A more
reliable assessment of visual changes resulting from corneal edema of
varying origins is achieved by measurement of changes in the contrast
sensitivity function. The measurements can be sensitized by the presence of
a glare source to allow a more accurate determination of the nature of the
visual loss. Even in the absence of a measurable loss of visual acuity,
corneal edema leads to diminished visual function. The magnitude and type
of this loss is dependent on the origin of the edema and the site of the
corneal response.
