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Visual function following vitrectomy for diabetic macular edema

Poster Details

First Author: Y.Sugiura JAPAN

Co Author(s):    F. Okamoto   Y. Okamoto   T. Oshika            0   0 0   0 0   0 0   0 0

Abstract Details


To evaluate visual function in patients undergoing vitrectomy for diabetic macular edema (DME).


Nineteen eyes of 19 patients with DME who had been treated with panretinal photocoagulation and sub-Tenon’s triamcinolone acetonide injection.


Before and 6 months after vitrectomy, measurements were taken in the logarithm of the minimum angle of resolution best-corrected visual acuity (logMAR BCVA), letter contrast sensitivity, severity of metamorphopsia with M-CHARTS, amount of aniseikonia with New Aniseikonia Test, and stereopsis with Titmus stereo test and TNO stereotest. We also measured central foveal thickness (CFT) with spectral-domain optical coherence tomography.


LogMAR BCVA did not change by vitrectomy (preope 0.61± 0.37, postope 0.49 ± 0.25), but contrast sensitivity significantly improved from 12.5 ± 5.2 to 15.3± 3.3 letters (p < 0.05). No statistically significant differences were observed in severity of metamorphopsia (preope 0.48 ± 0.32, postope 0.67± 0.46) and amount of aniseikonia (preope 2.7 ± 2.2 % postope 3.6 ± 3.5 %). Stereopsis tended to deteriorate. Vitrectomy significantly improved CFT from 470 ± 112 µm to 355 ± 140 µm (p<0.05). The degree of improvement in letter contrast sensitivity was significantly correlated with the degree of improvement in CFT (p<0.005).


Vitrectomy significantly improved contrast sensitivity and CFT in patients with DME. The other visual function including metamorphopsia, aniseikonia and stereopsis didn’t change.

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