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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...

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Oxygen-Induced Retinopathy Model for Ischemic Retinal Diseases in Rodents

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Iodine-Induced Retinopathy: A Case Report

Sabiha Güngör Kobat¹, Fatih Cem Gül¹, Burak Turgut²

¹University of Health Sciences Turkey Faculty of Medicine, Department of Ophthalmology, Elazığ, Turkey.

Turkish Journal of Ophthalmology

|August 29, 2020

Summary

Excessive iodine intake from supplements can cause vision problems. This case report highlights iodine-induced retinopathy in a patient consuming too much potassium iodide.

Keywords:

Iodine retinopathy toxic

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Last Updated: Jun 29, 2026

Oxygen-Induced Retinopathy Model for Ischemic Retinal Diseases in Rodents

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Published on: September 16, 2020

Monitoring Dynamic Growth of Retinal Vessels in Oxygen-Induced Retinopathy Mouse Model

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Retinal Pathophysiological Evaluation in a Rat Model

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Area of Science:

Ophthalmology
Endocrinology
Toxicology

Background:

Potassium iodide is commonly used as an iodine supplement in salt within national health programs, such as in Turkey.
Iodine is essential for thyroid hormone synthesis, but excessive amounts can lead to adverse effects.

Observation:

A patient presented with visual disturbances and was diagnosed with retinopathy.
The patient had a history of consuming an excessive dose of iodine through supplements.

Findings:

The excessive iodine intake was identified as the cause of the patient's retinopathy.
Iodine overdose can exhibit toxic effects on the retinal pigment epithelium and photoreceptors, leading to vision impairment.

Implications:

This case underscores the potential risks of iodine overconsumption, even from seemingly benign sources like salt supplements.
Clinicians should consider iodine toxicity in patients presenting with unexplained retinopathy, especially those with high supplement intake.
Public health initiatives involving iodine supplementation should monitor for potential adverse effects and educate the public on safe intake levels.