The following is a summary of “Visual acuity assessment of central retinal artery occlusion patients with or without paracentral acute middle maculopathy via OCT-A,” published in the October 2023 issue of Opthalmology by Gong et al.
The impact of paracentral acute middle maculopathy (PAMM) on visual acuity in central retinal artery occlusion (CRAO) remains unclear. Researchers started a retrospective study to compare the visual acuity of CRAO patients with and without PAMM.
They included patients with CRAO, both with and without PAMM. Optical coherence tomography angiography (OCT-A) was employed to document macular retinal thickness and the density of superficial and deep vessels. Best-corrected visual acuity (BCVA) was transformed into a logarithm of the minimum angle of resolution (LogMAR) for statistical assessment.
The results showed 34 CRAO patients with PAMM (43.13%) and 30 CRAO patients without PAMM (46.87%). The PAMM group exhibited a superior LogMAR BCVA (1.48 (0.49, 1.85) Vs. 1.85 (1.70, 1.96), P<0.01) compared to the no-PAMM group. Furthermore, a notable difference was observed in the retinal thickness of the central macular sulcus (328.00 (304.50–332.25) Vs. 352.50 (311.75–420.50), P=0.01). A significant correlation was also identified between LogMAR BCVA and macular retinal thickness (r = 0.42; P<0.01).
Investigators concluded that CRAO patients with PAMM have better visual acuity and less macular edema, as evidenced by OCT-A.