Early Photoreceptor Alterations After Retinal Detachment Repair

Area of Science:

• Ophthalmology
• Retinal imaging
• Visual neuroscience

Background:

• Outer retinal microstructure, including the external limiting membrane (ELM) and ellipsoid zone (EZ), is crucial for visual recovery post-rhegmatogenous retinal detachment (RRD).
• Quantitative assessment of EZ/ELM reflectivity, termed relative EZ reflectivity (rEZR), is a novel biomarker for photoreceptor integrity using spectral-domain optical coherence tomography (SD-OCT).

Purpose of the Study:

• To evaluate the functional relevance of rEZR after anatomically successful RRD repair.
• To assess the association between rEZR and surgical techniques employed for RRD repair.

Main Methods:

• Retrospective analysis of 187 patients with primary RRD treated between April 2021 and April 2023.
• rEZR determined from postoperative SD-OCT imaging at six-week follow-up.
• Linear-mixed effect models used to assess the association of rEZR with postoperative best-corrected visual acuity (BCVA) and surgical methods (vitrectomy vs. scleral buckling).

Main Results:

• Higher rEZR values were significantly associated with better BCVA (P < 0.001).
• Scleral buckling surgery was associated with higher rEZR compared to vitrectomy (P < 0.044).
• The study included 187 patients (median age 70 years), with 91.4% undergoing vitrectomy.

Conclusions:

• The study supports the functional relevance of outer retinal integrity, quantified by rEZR, in early recovery after RRD repair.
• rEZR is associated with specific surgical variables, highlighting its potential as a prognostic imaging biomarker.
• Longitudinal rEZR changes require further investigation to optimize visual outcomes in RRD patients.