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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...

Diabetic Nephropathy

Diabetic Nephropathy

Definition Diabetic nephropathy is a chronic kidney complication that results from prolonged hyperglycemia.Prevalence It is the most common cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide, affecting up to half of individuals with diabetes.Pathophysiology • Sustained hyperglycemia triggers multiple hemodynamic and metabolic changes in the kidney. • Early in the disease, increased renal blood flow and glomerular hyperfiltration occur due to afferent arteriolar...

Complications of Diabetes Mellitus

Complications of Diabetes Mellitus

Diabetes mellitus is a chronic metabolic disorder characterized by persistent hyperglycemia due to insulin deficiency, resistance, or both. Prolonged hyperglycemia disrupts metabolic homeostasis and leads to acute and chronic complications.Acute ComplicationsAcute complications result from sudden metabolic imbalance.Diabetic ketoacidosis (DKA) mainly appears in type 1 diabetes but may also develop in type 2 diabetes, particularly under extreme stress. It arises from severe insulin deficiency,...

Diabetic Neuropathy

Diabetic Neuropathy

DefinitionDiabetic neuropathy is nerve damage caused by long-standing diabetes mellitus. It results directly from prolonged high blood sugar levels.PathophysiologyThe pathophysiology of diabetic neuropathy involves both metabolic and vascular disturbances triggered by chronic hyperglycemia.Metabolic injury: Elevated glucose levels activate the polyol pathway within nerve cells, leading to the accumulation of sorbitol and fructose. This increases oxidative stress, disrupts normal nerve...

Type I Diabetes II: Pathophysiology

Type I Diabetes II: Pathophysiology

Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular uptake of...

Type II Diabetes II: Pathophysiology

Type II Diabetes II: Pathophysiology

PathophysiologyType 2 diabetes mellitus (T2DM ) is a chronic metabolic disorder characterized by insulin resistance and progressive pancreatic β-cell dysfunction, leading to impaired glucose homeostasis. It results from interactions among genetic predisposition, environmental factors, and metabolic stressors, such as overnutrition and a sedentary lifestyle.Insulin Resistance and Glucose DysregulationEarly T2DM involves insulin resistance in skeletal muscle, adipose tissue, and the liver.

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Related Experiment Video

Updated: Jun 2, 2026

An Assay to Detect Protection of the Retinal Vasculature from Diabetes-Related Death in Mice

An Assay to Detect Protection of the Retinal Vasculature from Diabetes-Related Death in Mice

Published on: January 12, 2024

[Diabetic retinopathy and maculopathy].

¹5. Medizinische Klinik, Universitätsmedizin Mannheim, Universität Heidelberg, Theodor-Kutzer-Ufer 1-3, Mannheim, Germany. hp.hammes@umm.de

|April 21, 2011

Summary

Diabetic retinopathy, a complication of diabetes, increases cardiovascular risk. Early detection through annual screenings is crucial for timely, evidence-based treatment, potentially improving outcomes with new therapies.

Area of Science:

Ophthalmology
Endocrinology
Cardiology

Context:

Diabetic retinopathy is the most common microvascular complication in diabetes mellitus.
Early stages of diabetic retinopathy are asymptomatic, necessitating regular screening.
The development of retinopathy signifies heightened cardiovascular risk.

Purpose:

To emphasize the importance of annual screening for diabetic retinopathy.
To highlight the link between diabetic retinopathy and cardiovascular risk.
To discuss current and emerging therapeutic strategies for diabetic retinopathy and macular edema.

Summary:

Diabetic retinopathy, a frequent complication, requires yearly screening due to asymptomatic early stages.
Treatment is guided by retinopathy severity, involving collaboration between diabetology and ophthalmology.

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Last Updated: Jun 2, 2026

An Assay to Detect Protection of the Retinal Vasculature from Diabetes-Related Death in Mice

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Behavioral Assessment of Visual Function via Optomotor Response and Cognitive Function via Y-Maze in Diabetic Rats

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Vascular endothelial growth factor inhibitors offer potential improvement for diabetic macular edema therapy.

Impact:

Annual screening can lead to earlier diagnosis and intervention for diabetic retinopathy.
Understanding the link between retinopathy and cardiovascular health can inform patient management.
Novel treatments like VEGF inhibitors may enhance therapeutic success rates for diabetic macular edema.