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Diabetic Retinopathy

Diabetic Retinopathy

DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...

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Related Experiment Video

Updated: Jul 6, 2026

Efficient and Consistent Generation of Retinal Pigment Epithelium/Choroid Flatmounts from Human Eyes for Histological Analysis

Efficient and Consistent Generation of Retinal Pigment Epithelium/Choroid Flatmounts from Human Eyes for Histological Analysis

Published on: October 28, 2022

Pathological changes in the vitreoretinal junction 1: epiretinal membrane formation.

D R J Snead¹, S James, M P Snead

¹Department of Pathology, University Hospital Coventry, Coventry, UK. david.snead@uhcw.nhs.uk

Eye (London, England)

|March 18, 2008

Summary

Laminocytes are the primary cells in idiopathic epiretinal membranes (ERMs). Retinal pigment epithelial cells indicate proliferative retinopathy, while diabetic membranes show neovascularization, not laminocytes.

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Last Updated: Jul 6, 2026

Efficient and Consistent Generation of Retinal Pigment Epithelium/Choroid Flatmounts from Human Eyes for Histological Analysis

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Published on: October 28, 2022

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Published on: February 10, 2021

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Area of Science:

Ophthalmology
Cell Biology
Retinal Diseases

Background:

Epiretinal membrane (ERM) formation causes macular vision disturbance and can lead to retinal detachment.
Understanding the cellular basis of ERM formation is crucial for improving treatment strategies.
Current treatments primarily involve surgical membrane removal.

Purpose of the Study:

To identify the cell types involved in the formation of epiretinal membranes.
To correlate histological findings with clinical conditions and vitreous status.
To elucidate the cellular origins of different types of ERMs.

Main Methods:

Histological analysis of 109 surgically removed ERM specimens.
Light microscopy and immunocytochemistry were employed.
Correlation with age-related changes in 32 cadaver eyes.

Main Results:

Laminocytes were the exclusive cell type in idiopathic ERMs (including cellophane maculopathy, macular hole, vitreomacular traction syndrome).
Retinal pigment epithelial (RPE) cells were present with laminocytes in membranes associated with retinal tears.
Diabetic retinopathy membranes comprised neovascular stromal tissue, lacking laminocytes.

Conclusions:

Laminocytes are the fundamental cell type in idiopathic ERMs.
Presence of RPE cells signifies proliferative retinopathy, often with retinal tears.
Diabetic membranes result from neovascularization, likely due to retinal hypoxia.