Quantitating the superior visual field loss associated with ptosis.
The effect of blepharoptosis on the superior visual field was assessed using a series of specially designed contact lenses to simulate ptosis in normal subjects. We found a progressive decrease in the superior visual field at the 90 degree vertical meridian, which was proportional to the degree of simulated ptosis. Our results were in close agreement with both a theoretical model and previous clinical observations. These results are important in evaluating patients contemplating ptosis surgery, as well as in visual field testing for neuro-ophthalmic disorders.
Meyer
D R
DR
Department of Ophthalmology, West Virginia University, Morgantown 26506.
Linberg
J V
JV
Powell
S R
SR
Odom
J V
JV
D000328:Adult; D001763:Blepharoptosis / Q000150:complications / Q000503:physiopathology*; D003261:Contact Lenses; D006801:Humans; D014786:Vision Disorders / Q000209:etiology / Q000503:physiopathology*; D058609:Visual Field Tests; D014794:Visual Fields