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Correlation Between RPE Aperture and Photoreceptor Integrity in Non-Neovascular AMD: A Longitudinal Study Using OCT

Yongyue Su¹, Yi He¹, Jiaxin Pu¹

¹State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, People's Republic of China.

Translational Vision Science & Technology

|June 17, 2026

Summary

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This summary is machine-generated.

Retinal pigment epithelium (RPE) apertures enlarge in non-neovascular age-related macular degeneration (AMD), worsening photoreceptor damage. This RPE aperture progression serves as a biomarker for monitoring degeneration and visual risk.

Area of Science:

Ophthalmology
Medical Imaging
Retinal Degeneration

Background:

Non-neovascular age-related macular degeneration (AMD) involves photoreceptor damage.
Pigment epithelial detachment (PED) with retinal pigment epithelium (RPE) apertures is observed in AMD.
The dynamic changes within PEDs and their impact on photoreceptors require further investigation.

Purpose of the Study:

To investigate longitudinal morphological changes of RPE apertures within PED.
To assess the association between these changes and photoreceptor integrity in non-neovascular AMD.

Main Methods:

Retrospective analysis of 22 eyes from 21 patients with RPE apertures within PED.
Longitudinal follow-up using optical coherence tomography (OCT) with 3D volumetric analysis.

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Measurement of RPE aperture dimensions, PED characteristics, and photoreceptor integrity (EZ loss, ONL thinning).

Main Results:

RPE apertures significantly enlarged over time, correlating with progressive ellipsoid zone (EZ) loss and outer nuclear layer (ONL) thinning.
PED height and volume decreased, while width increased.
RPE aperture size strongly correlated with photoreceptor damage, and its expansion independently predicted worsening EZ loss and ONL thinning.

Conclusions:

RPE apertures enlarge longitudinally in non-neovascular AMD, indicating progression.
RPE aperture progression is a dynamic biomarker for ongoing photoreceptor degeneration.
Quantitative OCT assessment of RPE aperture expansion aids in monitoring disease and visual risk.