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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: May 19, 2026

Retinal Pathophysiological Evaluation in a Rat Model

Retinal Pathophysiological Evaluation in a Rat Model

Published on: May 6, 2022

Retinal digest preparation: a method to study diabetic retinopathy.

Nadine Dietrich¹, Hans-Peter Hammes

¹5th Medical Department, Universitätsmedizin Mannheim, University of Heidelberg, Mannheim, Germany.

Methods in Molecular Biology (Clifton, N.J.)

|August 16, 2012

Summary

Retinal digestion, a method using trypsin, allows detailed study of blood vessel changes in experimental diabetic retinopathy. This technique quantifies vascular morphology, including cell counts and capillary changes, aiding research into the disease.

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Last Updated: May 19, 2026

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Area of Science:

Ophthalmology
Vascular Biology
Diabetic Complications

Background:

Diabetic retinopathy (DR) is a leading cause of vision loss.
Animal models are crucial for understanding DR pathogenesis.
Assessing retinal vascular changes is key to DR research.

Purpose of the Study:

To describe the retinal digestion method for studying experimental diabetic retinopathy.
To highlight the quantitative and qualitative assessments enabled by this technique.

Main Methods:

Retinal digestion using the enzyme trypsin.
Morphological assessment of retinal vasculature.
Quantitative analysis of venular and arteriolar diameters.

Main Results:

Precise evaluation of endothelial cell and pericyte numbers.
Identification and quantification of acellular capillaries.
Detailed characterization of retinal vascular morphology.

Conclusions:

Retinal digestion is a valuable method for studying DR in animal models.
The technique provides detailed insights into vascular pathology.
Enables precise measurement of key DR-related vascular features.