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Displacement of the macula is common following RRD repair and heterogeneous in nature. Most affected patients are symptomatic in the early postoperative period.

The results provide a simple and clinically useful model to employ when counselling patients on macular hole surgery.

Introduction The study reports 10-year anatomical and visual outcome in patients who underwent pars plana vitrectomy (PPV) for complications due to proliferative diabetic retinopathy (PDR). Methods Retrospective analysis of patients undergoing 20G PPV from January 1999 to May 2010 for tractional retinal detachment (TRD) and non-clearing vitreous hemorrhage (NCVH) secondary to PDR recorded prospectively on an electronic patient record. The primary aim was to study anatomical success and eyes with visual acuity (VA) of r0.3 logMAR at last follow-up. Results There were 346 eyes of 249 patients with mean age of 55.63 years and follow-up of 1.44 years. In all, 95.3% of eyes had a flat retina at final follow-up. Overall 136/346 (39.4%) eyes had final VA of logMAR r0.3 (Snellen 6/12) and 129 (37.3%) had logMAR Z1.0 (Snellen 6/60). In all, 50/181 (27.6%) eyes with TRD and 84/165 (50.9%) with NCVH achieved final VA of r0.3 logMAR (Snellen 6/12). A total of 218 (63.1%) showed Z0.3 logMAR improvement from baseline to last follow-up. Both preoperative VA and final postoperative (post-op) VA (Po0.001) improved significantly with each year from 1999 to 2010. The commonest peroperative complication was iatrogenic retinal tear formation (28.4%). This was a risk factor for the development of post-op retinal detachment, odds ratio: 3.90 (95% confidence interval: 1.91-7.97, P ¼ 0.0002). Silicone oil was used in 5.2% of patients at the

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