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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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Related Experiment Video

Updated: Apr 25, 2026

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT

Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT

Published on: August 4, 2018

Multicolor pattern scan laser for diabetic retinopathy with cataract.

Takao Hirano¹, Yasuhiro Iesato¹, Toshinori Murata¹

¹Department of Ophthalmology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan.

International Journal of Ophthalmology

|August 28, 2014

Summary

Longer laser wavelengths are more effective for retinal burns in cataract patients. A multicolor pattern scan laser system showed yellow and red lasers outperformed green lasers in eyes with moderate to severe cataracts.

Keywords:

diabetic macular edema pain photocoagulation photoreceptors retinal hemorrhage

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Quantitative Fundus Autofluorescence for the Evaluation of Retinal Diseases

Quantitative Fundus Autofluorescence for the Evaluation of Retinal Diseases

Published on: March 11, 2016

Area of Science:

Ophthalmology
Medical Technology

Background:

Cataract presence can impede effective retinal laser treatment.
Assessing optimal laser parameters for treating retinal conditions in cataractous eyes is crucial.

Purpose of the Study:

To evaluate the efficacy of different laser wavelengths (green, yellow, red) for retinal burns in cataractous eyes.
To determine the relationship between cataract severity and required laser wavelength.

Main Methods:

A multicolor pattern scan laser system with 532 nm (green), 577 nm (yellow), and 647 nm (red) lasers was used.
102 diabetic eyes with varying Emery-Little (EL) cataract severity grades were studied.
Treatment time, laser shots, and pain were recorded.

Main Results:

Green laser was effective for early cataracts (EL-1 and some EL-2).
Yellow laser was needed for moderate to severe cataracts (most EL-2, EL-3, and some EL-4).
Red laser was effective for the most severe cataracts (remaining EL-3 and EL-4).

Conclusions:

Longer laser wavelengths are more effective for retinal photocoagulation in the presence of cataracts.
Wavelength selection should consider cataract severity for optimal treatment outcomes.