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Diabetic retinopathy and systemic factors.

Robert N Frank1

  • 1Department of Ophthalmology, Kresge Eye Institute, Wayne State University School of Medicine, Detroit, MI, USA.

Middle East African Journal of Ophthalmology
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PubMed
Summary

Chronic high blood glucose is the primary driver of diabetic retinopathy. While blood pressure and lipids may play roles, genetic factors influencing this eye disease remain unidentified.

Keywords:
Blood LipidsBlood PressureDiabetic RetinopathyFenofibrateGeneticsHemoglobin A1cMacular Edema

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Area of Science:

  • Ophthalmology
  • Endocrinology
  • Genetics

Background:

  • Diabetic retinopathy is an ocular disease influenced by systemic and local factors.
  • Chronic hyperglycemia is a primary risk factor, with higher blood glucose levels correlating to more severe retinopathy.
  • Hemoglobin A1c levels below 6.5% are generally associated with minimal retinopathy development.

Purpose of the Study:

  • To review the factors influencing diabetic retinopathy development and progression.
  • To assess the impact of glycemic control, blood pressure, and lipid levels on retinopathy.
  • To discuss the potential genetic or epigenetic influences on the pathogenesis of diabetic retinopathy.

Main Methods:

  • Review of systemic and local factors affecting diabetic retinopathy.
  • Analysis of clinical trials investigating antihypertensive and lipid-lowering agents.
  • Examination of evidence for genetic and epigenetic contributions to retinopathy.

Main Results:

  • Chronic high blood glucose is strongly linked to increased severity and incidence of diabetic retinopathy.
  • Blood pressure lowering shows limited benefit for retinopathy, while fenofibrate demonstrates potential in preventing its progression.
  • The precise genetic or epigenetic factors predisposing or protecting against diabetic retinopathy are yet to be identified.

Conclusions:

  • Glycemic control is paramount in managing diabetic retinopathy.
  • Further research is needed to elucidate the role of lipids and identify the elusive genetic factors in diabetic retinopathy pathogenesis.