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  • Title: Correlation of foveal photoreceptor integrity with visual outcome in idiopathic epiretinal membrane.
    Author: Kim HJ, Kang JW, Chung H, Kim HC.
    Journal: Curr Eye Res; 2014 Jun; 39(6):626-33. PubMed ID: 24401121.
    Abstract:
    PURPOSE: To evaluate the correlation of foveal photoreceptor integrity with visual outcome in patients undergoing idiopathic epiretinal membrane (ERM) surgery using spectral domain optical coherence tomography (SD-OCT). MATERIALS AND METHODS: Forty-three eyes of 43 patients were examined by SD-OCT before and at 1 and 6 months after vitrectomy for idiopathic ERM. Patients were divided into two groups based on the preoperative integrity of photoreceptor inner and outer segment junction (IS/OS) - Group I, intact IS/OS and Group D, disrupted IS/OS. Where present, disrupted length of IS/OS was measured, and the association between disrupted length of IS/OS and foveal thickness with best corrected visual acuity (BCVA) was evaluated. RESULTS: There were 27 eyes with an intact IS/OS (Group I) and 16 eyes with a disrupted IS/OS (Group D). Patients in Group I had significantly better postoperative BCVA and greater improvement than those in Group D at 6 months after surgery (p = 0.001 and p = 0.030, respectively). By 6 months after surgery, the disrupted length of IS/OS observed preoperatively in Group D had decreased significantly (p = 0.007). The disrupted length of IS/OS before and at 6 months after the surgery in Group D showed a positive correlation with BCVA (r = 0.632 and p = 0.009; r = 0.658 and p = 0.006, respectively). Foveal thickness did not correlate significantly with preoperative and postoperative BCVA. CONCLUSIONS: Preoperative disruption of foveal photoreceptors can be restored after ERM surgery. The preoperative integrity of foveal photoreceptors may be a clinically significant prognostic factor for visual recovery in patients with idiopathic ERM.
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