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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...

Diabetes: Management and Pharmacotherapy

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...

Diabetes Mellitus: Type 2 and Gestational

Diabetes Mellitus: Type 2 and Gestational

Type 2 diabetes, characterized by insulin resistance, arises when the insulin receptors on cells lose responsiveness to insulin, diminishing the cell's capacity to take up glucose, resulting in elevated blood glucose levels. To receive a diagnosis of Type 2 diabetes, a series of blood glucose tests are necessary to assess whether the blood glucose falls within normal parameters. If the result is out of the normal range, a patient may be diagnosed as prediabetic or diabetic, depending on the...

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...

Diabetes Mellitus: Overview and Type I Subtype

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Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
Type 1 diabetes is an autoimmune disease in which the immune system mistakenly attacks and destroys the insulin-producing beta cells in the pancreas. As a result, the body is unable to produce sufficient insulin, and individuals with...

Complications of Diabetes Mellitus

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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,...

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Related Experiment Video

Updated: Jun 25, 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

Metabolic control and diabetic retinopathy.

Monica Rodriguez-Fontal¹, John B Kerrison, D Virgil Alfaro

¹Charleston Neuroscience Institute, Retina Division, Charleston, SC 29414, USA. mrfontal@gmail.com

Current Diabetes Reviews

|February 10, 2009

Summary

Intensive glycemic control significantly reduces diabetic retinopathy risk by 27%, especially when started early. Lowering lipids also protects vision and reduces cardiovascular issues in diabetic patients.

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Area of Science:

Ophthalmology
Endocrinology
Cardiology

Background:

Diabetic retinopathy (DR) progression is linked to retinopathy severity, visual acuity, hemoglobin A1c (HbA1c), hematocrit, and serum lipids.
Intensive glycemic control is a key factor in managing DR, with significant long-term benefits.
Elevated serum lipids contribute to cardiovascular morbidity and may worsen DR outcomes.

Purpose of the Study:

To evaluate the long-term benefits of intensive glycemic control on diabetic retinopathy.
To assess the impact of lipid-lowering interventions on DR progression and associated vision loss.
To identify key risk factors for progression to proliferative diabetic retinopathy (PDR).

Main Methods:

Analysis of data from major studies like the Early Treatment Diabetic Retinopathy Study (ETDRS), Diabetes Control and Complications Trial (DCCT), and others.
Evaluation of intensive glycemic control strategies and their effect on retinopathy development and progression.
Assessment of the relationship between serum lipid levels, cardiovascular health, and DR outcomes.

Main Results:

Intensive glycemic control reduces the risk of any retinopathy by approximately 27%.
Early initiation of intensive therapy provides the most significant benefits for retinopathy course and progression.
Lipid lowering may decrease hard exudate formation and associated vision loss in DR patients, and reduce cardiovascular risk.

Conclusions:

Intensive glycemic control is highly effective in preventing and managing diabetic retinopathy, with benefits outweighing risks.
Lowering serum lipids offers a dual benefit of reducing cardiovascular risk and potentially preserving vision in diabetic retinopathy.
Early and comprehensive management of diabetes, including glycemic and lipid control, is crucial for preventing severe complications.