Retinal vessel caliber changes in vasculitis

Gerald Liew, Adnan Tufail, Victoria F Cosatto, Ava G Tan, Javier Zarranz-Ventura, Dawn A Sim, Pearse A Kean, Catherine A Egan, Paul Mitchell, Mark C Westcott, Richard W J Lee, Carlos E Pavesio

Research output: Contribution to journalArticle (Academic Journal)peer-review

6 Citations (Scopus)


BACKGROUND: Retinal vasculitis is a potentially sight-threatening inflammation of the retinal vessels, but little is known about the in vivo vascular changes, which occur in affected eyes. The authors therefore sought to measure vessel caliber in eyes with vasculitis.

METHODS: Retrospective case-control study. Vasculitis was confirmed using fluorescein angiography. Vessel calibers were measured using validated semiautomated software.

RESULTS: There were 21 eyes from 15 patients with vasculitis and 33 control eyes from 21 control subjects. Most cases were diagnosed with idiopathic vasculitis. All had periphlebitis, and one eye also had arteritis. After adjustment for age and gender, mean arteriolar caliber was 143 μm (95% confidence interval [CI], 134-152) in cases and 158 μm (95% CI, 151-165) in controls (P = 0.01). Venular caliber was similar in cases (229 μm; 95% CI, 215-243) and controls (228 μm; 95% CI, 217-234; P = 0.91), whereas arteriole-to-venule ratio was smaller in cases (0.63; 95% CI, 0.60-0.66) compared with controls (0.70; 95% CI, 0.02-0.11; P = 0.004).

CONCLUSION: Retinal vasculitis was associated with narrower arteriolar caliber, whereas venular caliber was similar to controls. This resulted in a smaller arteriole-to-venule ratio in eyes with vasculitis.

Original languageEnglish
Pages (from-to)803-8
Number of pages6
JournalRetina (Philadelphia, Pa.)
Issue number4
Publication statusPublished - Apr 2015


  • Adult
  • Arterioles
  • Case-Control Studies
  • Female
  • Fluorescein Angiography
  • Humans
  • Image Processing, Computer-Assisted
  • Male
  • Middle Aged
  • Photography
  • Retinal Artery
  • Retinal Vasculitis
  • Retinal Vein
  • Retrospective Studies
  • Venules


Dive into the research topics of 'Retinal vessel caliber changes in vasculitis'. Together they form a unique fingerprint.

Cite this