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Updated: Feb 7, 2026

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Optical Coherence Tomography Angiography in Intermediate Uveitis.

Maximilian W M Wintergerst1, Maximilian Pfau1, Philipp L Müller1

  • 1Department of Ophthalmology, University of Bonn, Bonn, Germany.

American Journal of Ophthalmology
|July 21, 2018
PubMed
Summary
This summary is machine-generated.

Intermediate uveitis reduces retinal microvasculature density and complexity, affecting both superficial and deep layers. Choriocapillaris perfusion is also altered, indicating macular microvasculature impairment even without edema.

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Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Retinal Vascular Diseases

Background:

  • Intermediate uveitis is an inflammatory condition affecting the eye.
  • Microvascular changes in the retina and choriocapillaris are not well understood in intermediate uveitis.
  • Optical coherence tomography angiography (OCT-A) is a key imaging modality for microvascular assessment.

Purpose of the Study:

  • To investigate the involvement of retinal and choriocapillaris microvasculature in intermediate uveitis using OCT-A.
  • To quantify microvascular changes in patients with intermediate uveitis compared to healthy controls.

Main Methods:

  • A case-control study design was employed.
  • Swept-source OCT-A was used to image 29 eyes with intermediate uveitis and 30 age-matched control eyes.
  • Quantitative analysis of superficial and deep retinal vasculature (vessel density, skeleton density, vessel diameter index, fractal dimension) and choriocapillaris perfusion parameters was performed using ImageJ.

Main Results:

  • Significant reductions in all measured OCT-A parameters were observed in both superficial and deep retinal layers of intermediate uveitis eyes compared to controls.
  • The choriocapillaris layer showed increased perfusion heterogeneity and a higher proportion of large flow signal voids.
  • Microvascular impairment was evident even in the absence of macular edema.

Conclusions:

  • Intermediate uveitis is associated with reduced vascular density and complexity in both superficial and deep retinal layers.
  • Altered choriocapillaris perfusion is a characteristic finding in intermediate uveitis.
  • OCT-A findings suggest macular microvasculature impairment in intermediate uveitis, even without macular edema, aiding in diagnosis and monitoring.