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Evaluation of Ganglion Cell-Layer Complex and Macular Vessel Density in Amblyopic Eyes With Optical Coherence Tomography Angiography Publisher Pubmed

Summary: Study finds lower blood vessel density in amblyopic eyes, especially in older patients, hinting at vision impacts. More research needed! #EyeHealth #Amblyopia

Beni AN1 ; Dehghani A1 ; Peyman M1 ; Baghshahi S1 ; Sattari N1 ; Hoseinzadeh S1
Authors

Source: Photobiomodulation, Photomedicine, and Laser Surgery Published:2024


Abstract

Purpose: This study aimed to compare and quantify the ganglion cell complex (GCC), macular thickness, and vessel density (VD) in amblyopic eyes and their corresponding fellow eyes using optical coherence tomography angiography (OCTA). Methods: This cross-sectional study analyzed 32 unilateral amblyopic patients, examining both of their eyes. The study assessed parameters such as GCC thickness, macular thickness (total, inner, and outer layers), and VD in the optic nerve and macular region using spectral-domain OCTA. Results: This study analyzed data from 30 unilateral amblyopic patients with a mean age of 28.7 – 18.3 years. Amblyopic eyes had lower mean best-corrected visual acuity compared with healthy eyes. However, no significant differences were found in retinal nerve fiber layer (RNFL) thickness, GCC thickness, and overall retinal thickness between amblyopic and fellow eyes when accounting for factors such as axial length and signal strength index. In patients older than 30 years, amblyopic eyes had a higher global loss volume (GLV) compared with fellow eyes (p = 0.02). In addition, blood VD within the optic disc and superficial/deep capillary plexuses in different macular regions were significantly lower in amblyopic eyes compared with fellow eyes. Conclusions: This study found significant differences in VD and the GLV index between amblyopic eyes and healthy eyes, particularly in older patients. However, there were no notable differences in macular thickness and RNFL thickness. Further research is needed to determine the clinical relevance of these findings. © Mary Ann Liebert, Inc.
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