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The outcomes and prognostic factors of vitrectomy in chronic diabetic traction macular detachment.

PURPOSE: To investigate the outcomes of pars plana vitrectomy (PPV) for chronic diabetic traction macular detachment (CTMD).

METHODS: Ninety-six eyes that underwent PPV for CTMD of at least 6 months duration were retrospectively analyzed. Retinal reattachment rate, final vision, and prognostic factors for poor visual outcome were the main outcome measures.

RESULTS: All eyes had long-standing TMD (median 12, range: 6-70 months). The median postoperative follow-up was 15 (range: 3-65) months. Eighty-seven eyes (90.6%) had their retina and macula reattached after one PPV. At final examination, 84 eyes (87.5%) had stable vision or at least one line improvement, and three had no light perception. Seventeen (17.7%) and 41 (43%) eyes had preoperative visual acuity of ≥20/200 and ≥5/200 as compared to 40 (41.6%; P=0.0005) and 64 (66.7%; P=0.0014) eyes at final follow-up, respectively. Age >50 years (Odds ratio [OR] =5.84, 95% confidence interval [CI] =1.53-22.19, P=0.01), preoperative vision <20/400 (OR =7.012, 95% CI =1.82-26.93, P=0.005), and ischemic macula (OR =14.13, 95% CI =3.61-55.33, P<0.001) were significantly associated with final vision <20/400.

CONCLUSION: PPV for CTMD may be beneficial particularly in patients who are relatively younger and have good baseline vision and no macular ischemia.

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