Masked blepharoptosis.

Abstract

The eyelid of a patient with apparent unilateral blepharoptosis and a preference for fixation with the contralateral eye, was corrected surgically. However, postoperatively when the preferred (unoperated) eye was used for fixation, the ptosis appeared to have been overcorrected. When the non-preferred (operated) eye was forced to take up fixation, the overcorrected lid position resolved, but ptosis of the unoperated eyelid was unmasked. Surgical correction of this previously masked ptosis ultimately produced a satisfactory result. Our experience emphasizes the importance of ocular fixation preference when evaluating patients with blepharoptosis.