Microstructural Macular Changes after Pars Plana Vitrectomy for Primary Rhegmatogenous Retinal Detachment.

Area of Science:

• Ophthalmology
• Retinal Surgery
• Optical Coherence Tomography

Background:

• Rhegmatogenous retinal detachment (RRD) can lead to significant vision loss.
• Pars plana vitrectomy (PPV) with air tamponade is a common surgical treatment for RRD.
• Understanding foveal microstructural changes post-surgery is crucial for visual recovery.

Purpose of the Study:

• To describe foveal microstructural changes after pars plana vitrectomy (PPV) with air tamponade for rhegmatogenous retinal detachment (RRD).
• To investigate the association between external limiting membrane (ELM) and ellipsoid zone (EZ) recovery and best-corrected visual acuity (BCVA).
• To identify predictive factors for ELM and EZ recovery.

Main Methods:

• Optical coherence tomography (OCT) was used to analyze ELM and EZ integrity, cystoid macular edema (CME), and subretinal fluid bleb (SB) development.
• 59 eyes were followed for 6 months post-PPV for RRD.
• Eyes were categorized as macula-on (n=30) or macula-off (n=29).

Main Results:

• Macula-on patients maintained ELM and EZ integrity.
• Macula-off patients showed high rates of ELM (89.7%) and EZ (86.2%) restoration, with improved final BCVA.
• Preoperative macular involvement was associated with ELM/EZ restoration, which was inversely linked to CME development.

Conclusions:

• Prompt surgery for macula-off RRD facilitates outer retinal layer recovery and significant visual gain.
• Early intervention in RRD cases is associated with improved visual outcomes.
• ELM/EZ recovery is a key indicator of visual recovery post-RRD surgery.