• 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° 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 DR, Linberg JV, Powell SR, Odom JV. Quantitating the Superior Visual Field Loss Associated With Ptosis. Arch Ophthalmol. 1989;107(6):840–843. doi:10.1001/archopht.1989.01070010862030
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