The natural evolution of idiophatic epimacular membrane

Area of Science:

• Ophthalmology
• Retinal Diseases
• Surgical Decision-Making

Background:

• Epiretinal membrane (ERM) is a common condition in older adults, affecting the retina's inner surface.
• Optimal surgical timing and natural disease progression data for ERM are limited.
• Idiopathic epimacular membrane management remains a clinical challenge.

Purpose of the Study:

• To evaluate the natural course of idiopathic epimacular membrane.
• To assess changes in visual acuity and retinal thickness over time.
• To inform surgical intervention decisions for ERM.

Main Methods:

• Retrospective analysis of 49 patients (53 eyes) with idiopathic epimacular membrane.
• Confirmation of ERM using biomicroscopy, photography, and optical coherence tomography (OCT).
• Evaluation of best corrected visual acuity (BCVA) and central retinal thickness (CRT) over a mean follow-up of 21.3 months.

Main Results:

• While BCVA showed a tendency to decrease over the follow-up period (Spearman P=0.05), the difference between initial and final BCVA was not statistically significant.
• Initial BCVA correlated with CRT, final CRT, final volume, and age.
• Final BCVA demonstrated significant correlation with all measured parameters.

Conclusions:

• BCVA in ERM patients tends to decrease gradually, indicating slow macular changes.
• Despite the tendency for decrease, initial and final BCVA measurements were not substantially different.
• Postponing vitrectomy surgery (PPV) may be a safe strategy in the absence of clear ERM progression signs.