Multifocal electroretinogram in insulin dependent diabetes mellitus type I

To examine the retinal structure and function in relation to diabetes duration and glycemia in patients without diabetic retinopathy (DR). 85 adults with type 2 diabetes without DR or macular edema underwent dilated indirect ophthalmoscopy, optical coherence tomography (OCT), ultra-wide field fundus photography, multifocal electroretinography (mfERG) and HbA1C assessment. Patients were stratified as those with diabetes duration < 10 years and ≥ 10 years. Right eyes of all participants were analyzed. mfERG was analysed as ring 12, 34, 56. No significant differences were noted in OCT-derived retinal thickness measures between groups. mfERG P1 latencies were delayed, and amplitudes (nV/deg2) were reduced in all three rings in those with diabetes duration ≥ 10 years vs. < 10 years, with significant correlations to diabetes duration in all rings. Logistic regression showed that duration of diabetes ≥ 10 years was associated with greater age (odds ratio (OR) 1.081, 95% CI 1.022, 1.143) and lower P1 amplitudes in the middle ring (OR 0.924, 95% CI 0.854, 0.999). No significant correlations were observed between HbA1c and retinal measures. In the absence of DR, early retinal functional alterations are detectable on mfERG in patients with longer diabetes duration, but with no difference in OCT-derived retinal thickness.

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Early retinal functional alteration in relation to diabetes duration in patients with type 2 diabetes without diabetic retinopathy

Srinivasan

Sivaprasad

Rajalakshmi

et al. 2022

Sci Rep

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Multifocal electroretinogram in insulin dependent diabetes mellitus type I

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Early retinal functional alteration in relation to diabetes duration in patients with type 2 diabetes without diabetic retinopathy

Early retinal functional alteration in relation to diabetes duration in patients with type 2 diabetes without diabetic retinopathy

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