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Tommaso Micelli Ferrari, Massimo Lorusso, Marco Leozappa, Eleni Nikolopoulou, Luisa Micelli Ferrari, Saba Ciani; 23 G Vitrectomy For The Repair Of Idiopathic Macular Holes: SD Oct Features And Visual Outcomes. Invest. Ophthalmol. Vis. Sci. 2011;52(14):1056.
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To evaluate pre and post-operative features assessed by SD optical coherence tomography (SD OCT) useful to predict visual outcomes in eyes surgically treated for macular hole (MH).
Sixteen eyes of 16 subjects who had undergone 23 Gauge vitrectomy for the treatment of MH were included. Eyes were examined before and after surgery by SD OCT. Single HD line raster patterns were analized . The line raster data set consisted of a horizontal B-scan 6 mm in lenght. The correlation between preoperative and 3-month postoperative best corrected visual acuity (BCVA) and pre and postoperative foveal microstructure were evaluated. SD- OCT features included photoreceptor inner segment (IS) outer segment (OS) junction reflectivity, external limiting membrane (ELM) reflectivity and edge thickness.
The mean preoperative diameter of MH was 455 ±214,6 µm. Eyes with preoperative IS-OS junction and/or ELM defects had significantly lower preoperative BCVA(P=0.02). Eyes with postoperative integrity of IS/OS junction and ELM had marked visual recovery at 3 months(P=0.003). Pre and postoperative VA did not correlate with preoperative edge thickness (ET): the BCVA did not differ significantly between group A ( ET >450 µm) and group B (ET< 450 µm).(P=0.9; P=0.8 respectively).
Perilesional preoperative loss of the IS/OS junction and ELM may increase the risk of poor visual improvement in macular hole surgery.
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