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Related Concept Videos

Diabetic Retinopathy01:27

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 Nephropathy01:28

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...
Diabetic Neuropathy01:22

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...
Diabetes: Management and Pharmacotherapy01:15

Diabetes: Management and Pharmacotherapy

The therapy for diabetes aims to alleviate hyperglycemia-related symptoms, prevent acute metabolic decompensation, and reduce chronic end-organ complications. Glycemic control is evaluated through short-term (self-monitoring, continuous glucose monitoring) and long-term (A1c, fructosamine) metrics, enabling near real-time tracking of blood glucose levels and reflecting glycemic control over specific time frames.
Insulin remains the cornerstone of treatment for most patients with type 1 and many...
Type II Diabetes Mellitus III: Clinical Manifestations and Diagnosis01:25

Type II Diabetes Mellitus III: Clinical Manifestations and Diagnosis

Type 2 diabetes mellitus develops gradually and is often asymptomatic in early stages.Clinical ManifestationsWhen symptoms appear, they include fatigue, blurred vision, pruritus, delayed wound healing, and recurrent infections, particularly candidal infections. Peripheral neuropathy may present as numbness or tingling in the extremities. Classic hyperglycemia symptoms—polyuria, polydipsia, and polyphagia—are less common. Most patients are overweight and frequently have associated hypertension...
Type II Diabetes II: Pathophysiology01:24

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: May 16, 2026

An Assay to Detect Protection of the Retinal Vasculature from Diabetes-Related Death in Mice
04:36

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

Published on: January 12, 2024

Diabetic retinopathy: pathogenesis, clinical grading, management and future developments.

L Z Heng1, O Comyn, T Peto

  • 1NIHR Biomedical Research Centre at Moorfields Eye Hospital, NHS Foundation Trust and UCL Institute of Ophthalmology, London, UK.

Diabetic Medicine : a Journal of the British Diabetic Association
|December 5, 2012
PubMed
Summary
This summary is machine-generated.

Diabetic retinopathy is a complex neurovascular disease, not just microvascular. New treatments like anti-vascular endothelial growth factor agents offer hope but highlight the need for personalized management strategies.

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

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Related Experiment Videos

Last Updated: May 16, 2026

An Assay to Detect Protection of the Retinal Vasculature from Diabetes-Related Death in Mice
04:36

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

Published on: January 12, 2024

Retinal Pathophysiological Evaluation in a Rat Model
09:11

Retinal Pathophysiological Evaluation in a Rat Model

Published on: May 6, 2022

Behavioral Assessment of Visual Function via Optomotor Response and Cognitive Function via Y-Maze in Diabetic Rats
07:41

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

Published on: October 23, 2020

Area of Science:

  • Ophthalmology
  • Diabetology
  • Neuroscience

Background:

  • Diabetic retinopathy (DR) is a leading cause of visual impairment in working-age adults.
  • Historically viewed as microvascular, DR is now understood as a neurovascular disease with preceding neurodegeneration.
  • Current treatments like laser photocoagulation have limitations, especially for diabetic macular edema (DME).

Purpose of the Study:

  • To review the evolving understanding of diabetic retinopathy pathophysiology.
  • To discuss current and emerging treatment strategies for diabetic retinopathy and diabetic macular edema.
  • To highlight the need for personalized treatment algorithms based on disease phenotype and treatment response.

Main Methods:

  • Literature review of decades of research on diabetic retinopathy.
  • Analysis of the shift in understanding from microvascular to neurovascular disease.
  • Evaluation of current treatment modalities and emerging therapies, including anti-vascular endothelial growth factor agents.

Main Results:

  • Diabetic retinopathy is a complex neurovascular condition where neurodegeneration precedes and coexists with microvascular changes.
  • Anti-vascular endothelial growth factor agents are revolutionizing DME management, but variable patient response indicates multifactorial disease.
  • Understanding the correlation between retinal structure and visual function is crucial for disease characterization.

Conclusions:

  • Diabetic retinopathy is a multifactorial neurovascular disease requiring a deeper understanding of its complex pathways.
  • Personalized treatment strategies are needed, potentially guided by algorithms based on disease severity and individual responses to therapies.
  • Further research correlating retinal structure with visual function will refine disease phenotyping and management.