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