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  • Title: Blepharoptosis induced by prolonged hard contact lens wear.
    Author: van den Bosch WA, Lemij HG.
    Journal: Ophthalmology; 1992 Dec; 99(12):1759-65. PubMed ID: 1480390.
    Abstract:
    PURPOSE: The authors attempt to establish a relation between hard contact lens wear and upper eyelid ptosis. METHODS: This study consists of two parts. In the first part, the authors compare the unilateral or bilateral ptosis that developed during hard contact lens wear in 17 patients with the involutional ptosis that developed in another group of 73 patients. In the second part, the authors compare both upper and lower eyelid position in 46 patients who had been wearing hard contact lenses for at least 10 years with the position of 50 matched controls who had never worn contact lenses. RESULTS: The ptosis that had developed in the 17 patients who wore hard contact lenses was clinically similar to that caused by involutional levator disinsertion. The second part of the study shows that the prolonged wearers of hard contact lenses had upper eyelids that were lower by approximately 0.5 mm when compared with control subjects. This difference is statistically significant. According to standard criteria, there were at least 10 ptotic eyelids in the contact lens group versus 1 in the control group. CONCLUSION: The study findings suggest that prolonged hard contact lens wear may induce a lower position of the upper eyelid and eventually lead to ptosis through levator disinsertion.
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