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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...
Photoreceptors and Visual Pathways01:22

Photoreceptors and Visual Pathways

At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...

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Related Experiment Video

Updated: Jun 21, 2026

Quantification of Vascular Parameters in Whole Mount Retinas of Mice with Non-Proliferative and Proliferative Retinopathies
12:28

Quantification of Vascular Parameters in Whole Mount Retinas of Mice with Non-Proliferative and Proliferative Retinopathies

Published on: March 12, 2022

Retinal vascular changes and diabetic retinopathy.

Thanh T Nguyen, Tien Yin Wong

    Current Diabetes Reports
    |July 31, 2009
    PubMed
    Summary

    The retinal vasculature reflects lifetime hyperglycemia exposure. Retinal vascular changes, like arteriolar narrowing and venular widening, predict diabetes, cardiovascular disease, and stroke risk.

    Area of Science:

    • Ophthalmology
    • Cardiology
    • Endocrinology

    Background:

    • The retinal vasculature may serve as a biomarker for cumulative hyperglycemia effects.
    • Advanced retinal imaging allows precise, in vivo measurement of microcirculatory alterations.

    Purpose of the Study:

    • To explore the association between retinal vascular changes and diabetes and its complications.
    • To investigate the potential of retinal vascular imaging for prognostic insights.

    Main Methods:

    • Quantitative assessment of retinopathy signs.
    • Measurement of retinal vascular caliber using advanced imaging techniques.
    • Analysis of population-based studies on retinal vascular caliber and disease risk.

    Main Results:

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    Related Experiment Videos

    Last Updated: Jun 21, 2026

    Quantification of Vascular Parameters in Whole Mount Retinas of Mice with Non-Proliferative and Proliferative Retinopathies
    12:28

    Quantification of Vascular Parameters in Whole Mount Retinas of Mice with Non-Proliferative and Proliferative Retinopathies

    Published on: March 12, 2022

    Retinal Pathophysiological Evaluation in a Rat Model
    09:11

    Retinal Pathophysiological Evaluation in a Rat Model

    Published on: May 6, 2022

    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 arteriolar narrowing is linked to diabetes and coronary artery disease risk.
    • Retinal venular widening is associated with diabetic retinopathy progression and stroke risk.
    • Distinct pathophysiologic processes underlie arteriolar and venular caliber changes.

    Conclusions:

    • Retinal vascular caliber changes offer insights into early diabetes pathophysiology and complications.
    • Retinal vascular imaging holds promise for predicting clinical outcomes in diabetic patients.