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Dan Yoon, Rakesh Patel, Vinay Kumar Aakalu, Pete Setabutr; Preoperative levator function is a significant factor in postoperative results of Muller’s muscle-conjunctival resection. Invest. Ophthalmol. Vis. Sci. 2016;57(12):715.
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© ARVO (1962-2015); The Authors (2016-present)
How Muller’s muscle-conjunctival resection (MMCR) improves ptosis is unclear. We conducted a retrospective, observational clinical study to test the hypothesis that preoperative levator function is associated with post-operative results of MMCR. We also tested whether the length of resection and pre-operative phenylephrine response are significant factors.
Fifty-eight eyes of 39 patients that underwent MMCR were included in the study. Pre-operative levator function, post-phenylephrine change in margin reflex distance 1 (MRD1), length of resection, and post-operative MRD1 were measured (in mm). Multiple linear regression was performed with post-operative MRD1 as the dependent variable.
The regression model was statistically significant (F(4, 53) = 3.12, p = .034), with an R2 of .15. There was a significant association between preoperative levator function and post-operative MRD1 (β = .35, t(57)= 2.6, p = .012). Post-phenylephrine MRD1 (β = .02) and length of resection (β = -.84) were not significantly associated with post-operative MRD1 (ps > .05).
Preoperative levator function is a significant factor in postoperative results of MMCR. Length of resection and preoperative phenylephrine response are not significant factors.
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.
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