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ONE-YEAR OUTCOMES OF METAMORPHOPSIA AND RETINAL DISPLACEMENT AFTER EPIRETINAL MEMBRANE SURGERY
Amaka Watanabe1,2, Masahiro Ishida1,3, Masaki Shibata1
1Department of Ophthalmology, Teikyo University School of Medicine, University Hospital Mizonokuchi, Kanagawa, Japan.
Purpose:
To examine 1-year outcomes of metamorphopsia and tangential retinal displacement after epiretinal membrane surgery and identify predictors for metamorphopsia score at 1 year and its improvement from baseline.
Methods:
M-CHARTS were used to measure metamorphopsia. Distances between the intersections of two sets of retinal vessels were measured with infrared or autofluorescence images. Predictors for metamorphopsia scores at 1 year after surgery and their differences from baseline were identified with multivariate regression analysis.
Results:
Ninety-two eyes of 90 consecutive patients were included. The vertical and horizontal distances continued expanding for 1 year ( P < 0.001). Both vertical and horizontal metamorphopsia scores improved 3 months after surgery ( P = 0.025 and P < 0.001, respectively), and horizontal scores continued improving for a year. Horizontal metamorphopsia scores correlated with retinal displacement more strongly than vertical scores. Higher metamorphopsia score at baseline is predictive for that at 1 year. Older age and being male are predictive for less improvement of the score at 1 year from baseline.
Conclusion:
Metamorphopsia correlates with tangential retinal displacement at 1 year after epiretinal membrane surgery. Horizontal metamorphopsia scores keep improving until 1 year postoperatively. Being male and older age are both independent predictors for poor improvement of metamorphopsia after epiretinal membrane surgery.
