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Contact lens wear may increase risk of ptosis surgery failure
Ophthal Plast Reconstr Surg.2011;129(5):186-189.
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Contact lens wearers who underwent ptosis surgery had a higher rate of failure and were more likely to need redo surgery than a control group, according to a study.
The retrospective, comparative interventional case series included 30 patients who had a diagnosis of aponeurotic ptosis and a history of contact lens wear. The control group included 46 matched controls.
Ptosis correction was successful in 72% of patients, which was significantly lower than 89% in the control group (P < .005), the study said. Success was defined as a margin reflex distance between 3 mm and 5 mm, an interlid difference of 1 mm or less, and the absence of redo surgery.
The mean margin-reflex distance at presentation was 0.5 ± 2.4 mm in contact lens patients, of whom 32% had mild ptosis of 1.5 mm or more, 29% had moderate ptosis of 0.5 mm to 1 mm, and 39% had severe ptosis of 0 mm or less. Similar proportions were observed in the control group.
Researchers found that the power of the refractive correction (P < .005) and the age of the patient (P < .05) correlated directly with increased severity of ptosis at presentation.
Study limitations included the retrospective study design, patients using more than one contact lens brand and selection bias from excluding mild cases that did not require surgical intervention.