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Choroidal Vascular Changes in Multiple Evanescent White Dot Syndrome.

Marco Pellegrini1, Chiara Veronese1, Federico Bernabei1

  • 1Ophthalmology Unit, S.Orsola-Malpighi University Hospital, University of Bologna, Bologna, Italy.

Ocular Immunology and Inflammation
|November 8, 2019
PubMed
Summary

Multiple evanescent white dot syndrome (MEWDS) shows increased choroidal thickness and vascularity during acute stages. These changes significantly decrease during the recovery phase in affected eyes.

Keywords:
Choroidal thicknesschoroidal vascularity indexenhanced depth imagingmultiple evanescent white dot syndromeoptical coherence tomography

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Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Retinal Diseases

Background:

  • Multiple evanescent white dot syndrome (MEWDS) is an idiopathic inflammatory condition affecting the outer retina and choroid.
  • Understanding choroidal structural changes in MEWDS is crucial for diagnosis and management.

Purpose of the Study:

  • To evaluate choroidal structural changes in patients with MEWDS during acute and recovery stages.
  • To quantify choroidal thickness and vascularity in affected eyes.

Main Methods:

  • Enhanced-depth imaging optical coherence tomography (EDI-OCT) was used in 16 patients with unilateral MEWDS.
  • Images were analyzed using ImageJ software to measure subfoveal choroidal thickness (CT), total choroid area, and choroidal vascularity index (CVI).
  • Measurements were taken during both acute and recovery stages in affected and fellow eyes.

Main Results:

  • During the acute stage, eyes with MEWDS exhibited significantly higher subfoveal CT, total choroidal area, and CVI compared to fellow eyes.
  • In the recovery stage, these parameters (subfoveal CT, total choroidal area, CVI) in MEWDS eyes significantly decreased.
  • The study found significant differences in choroidal structure between acute and recovery phases.

Conclusions:

  • Choroidal thickness and vascularity are significantly increased during the acute stage of MEWDS.
  • These choroidal changes normalize to some extent during the recovery stage.
  • EDI-OCT is a valuable tool for assessing choroidal alterations in MEWDS.