Why Poor Vision Despite an Attached Retina following Primary Vitrectomy in Egyptian Patients?

Objective: To correlate findings on spectral domain optical coherence tomography (SD-OCT) and best-corrected visual acuity (BCVA) following primary vitrectomy for rhegmatogenous retinal detachment (RRD). Methods: In this prospective, interventional, non-randomized case series, 71 eyes with RRD of intermediate severity underwent primary vitrectomy followed by SD-OCT one month later. Main outcome measures were inner segment/outer segment (IS/OS) junction line and external limiting membrane (ELM) disruption. Results: All patients achieved reattachment with mean BCVA of 0.77 +/- 0.36 logMAR. There was statistically significant correlation between each length of IS/OS and ELM defect on the one hand, and BCVA on the other hand. Conclusion: The extent of IS/OS and ELM disruption explains the poor visual outcome in successful RD surgery with an otherwise normal foveal contour.