---
title: What causes retinal pigment epithelium changes?
description: "The retinal pigment epithelium (RPE) is a layer of cells important for supporting photoreceptors. Changes in the RPE occur in many retinal diseases and can affect vision. ## Degenerative and Age-Related Causes Age-related macular degeneration (AMD) is a major cause…"
url: "https://bluefinvision.com/knowledge-base/topics/conditions-diseases/what-causes-retinal-pigment-epithelium-changes/"
updated: "2025-12-11"
category: "Conditions & Diseases"
---

# What causes retinal pigment epithelium changes?

The retinal pigment epithelium (RPE) is a layer of cells important for supporting photoreceptors. Changes in the RPE occur in many retinal diseases and can affect vision.

## Degenerative and Age-Related Causes

Age-related macular degeneration (AMD) is a major cause of RPE change, including drusen formation, pigment mottling, and geographic atrophy. Chronic light exposure, oxidative stress, and genetics contribute.

- RPE disturbance is central in both dry and wet AMD
- Long-standing retinal detachment can also damage the RPE
- Inherited retinal diseases may show characteristic RPE patterns

## Inflammatory and Other Causes

Inflammatory conditions, previous infection, or trauma can alter RPE pigmentation and function. Some medications are also associated with RPE toxicity.

## Further Information

The Blue Fin Vision® articles on [dry AMD](https://bluefinvision.com/blog/what-is-dry-amd-understanding-age-related-macular-degeneration/) and [macular degeneration disease](https://bluefinvision.com/blog/what-is-macular-degeneration-disease/) discuss how RPE changes contribute to central vision loss.