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Choroidal circulation in diabetic patients.

G Dimitrova1, S Kato, Y Tamaki

  • 1Department of Ophthalmology, University of Tokyo, School of Medicine, Japan. galina-tky@umin.ac.jp

Eye (London, England)
|November 13, 2001
PubMed
Summary

Diabetic retinopathy impacts choroidal circulation, with increased resistivity index observed in posterior ciliary arteries and ophthalmic arteries in patients with background diabetic retinopathy (BDR). Even without retinopathy, diabetic patients show altered retrobulbar circulation.

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Area of Science:

  • Ophthalmology
  • Vascular Biology
  • Diabetology

Background:

  • Diabetic retinopathy (DR) is a leading cause of vision loss.
  • Understanding the vascular changes associated with DR is crucial for early intervention.
  • Choroidal circulation's role in DR pathogenesis requires further investigation.

Purpose of the Study:

  • To evaluate choroidal circulatory changes in diabetic patients.
  • To compare retrobulbar circulation in patients with and without background diabetic retinopathy (BDR).
  • To utilize colour Doppler imaging (CDI) for assessing circulatory parameters.

Main Methods:

  • Colour Doppler imaging (CDI) was employed to measure circulatory parameters.
  • Vascular measurements included the posterior ciliary artery (PCA), central retinal artery (CRA), and ophthalmic artery (OA).

Related Experiment Videos

  • The study included 73 diabetic patients (38 without DR, 35 with BDR) and 22 controls, analyzed using non-parametric tests.

    • Main Results:

    • Patients with BDR exhibited decreased end-diastolic velocity (EDV) and increased resistivity index (RI) in the PCA compared to controls.
    • Increased RI was noted in the CRA and OA of BDR patients.
    • Non-diabetic retinopathy (NDR) patients showed increased PCA RI and decreased CRA EDV compared to controls.

    Conclusions:

    • Diabetic patients, both with and without retinopathy, exhibit altered choroidal circulation.
    • These findings suggest that choroidal vascular changes are an early indicator in diabetic patients.
    • The study highlights the importance of assessing choroidal blood flow in managing diabetic eye disease.