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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...
Glaucoma: Overview01:25

Glaucoma: Overview

Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
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...
Complications of Diabetes Mellitus01:22

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,...
Type I Diabetes III: Clinical Manifestations01:19

Type I Diabetes III: Clinical Manifestations

Type 1 diabetes mellitus typically presents with rapid-onset symptoms due to the body’s inability to utilize glucose in the absence of insulin. Since insulin is required for glucose uptake into cells, its deficiency leads to hyperglycemia and cellular energy deprivation, resulting in characteristic clinical features.Polyuria and PolydipsiaOne of the earliest, most prominent symptoms is polyuria (excessive urination). When blood glucose concentrations rise above the renal threshold, the kidneys...

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[Pathopshysiological mechanisms in macular edema].

Oftalmologia (Bucharest, Romania : 1990)·2014
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Ossification of the choroid: three clinical cases and literature review of the pathogenesis of intraocular ossification.

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Related Experiment Video

Updated: May 24, 2026

Quantification of Diabetes-induced Adherent Leukocytes in Retinal Vasculature
05:54

Quantification of Diabetes-induced Adherent Leukocytes in Retinal Vasculature

Published on: January 24, 2025

[Specific aspects in diabetic cataract].

Ramona Albulescu, Ileana Zolog

    Oftalmologia (Bucharest, Romania : 1990)
    |March 21, 2012
    PubMed
    Summary
    This summary is machine-generated.

    Diabetic cataract, a leading cause of blindness, involves the polyol pathway. Effective management requires controlling blood sugar and treating diabetic retinopathy to prevent vision loss.

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    Area of Science:

    • Ophthalmology
    • Endocrinology
    • Biochemistry

    Context:

    • Diabetic cataract is a significant cause of blindness globally.
    • The exact mechanisms of diabetic cataract development are not fully understood.
    • The polyol pathway is implicated in the early stages of diabetic cataract.

    Purpose:

    • To summarize current understanding of diabetic cataract pathogenesis.
    • To highlight the role of the polyol pathway in diabetic cataract.
    • To discuss risk factors, prevention, and treatment of diabetic cataract.

    Summary:

    • Diabetes significantly increases cataract risk, with the polyol pathway playing a key role.
    • Population studies confirm the diabetes-cataract link and identify risk factors.
    • Optimal glycemic control is crucial for preventing diabetic eye complications; surgery offers good recovery if retinopathy is managed.

    Impact:

    • Emphasizes the importance of metabolic risk factor removal and disease control for preventing diabetic vision loss.
    • Highlights that effective treatment relies on optimal glycemic control and management of diabetic retinopathy.
    • Suggests surgical intervention for diabetic cataract provides good visual outcomes when combined with appropriate retinopathy treatment.