Variation of choroidal thickness and vessel diameter in patients with posterior non-infectious uveitis

Millena G. Bittencourt, Saleema Kherani, Daniel A. Ferraz, Mehreen Ansari, Humzah Nasir, Yasir J. Sepah, Mostafa Hanout, Diana V. Do, Quan Dong Nguyen

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9 Scopus citations

Abstract

Background: Choroidal thickness (CTh) and choroidal vessel diameter (VD) in the Haler’s layer were evaluated as markers of inflammatory insult in non-infectious uveitis (NIU). Spectral-domain optical coherence tomography (Spectralis®, Heidelberg Engineering Inc.) scans were acquired from 23 normal subjects (39 eyes – group 1), 7 subjects with high myopia (14 eyes – group 2), and 19 patients with NIU (23 eyes – group 3). In groups 1 and 2, CTh and VD were measured at 3 different points of the same horizontal OCT scan passing through the fovea and a mean calculated. Mean CTh and VD were calculated in 2 other locations, 2 mm superior and inferior from the chosen foveal horizontal scan. In group 3, three measurements of CTh and VD were obtained within 1 mm of a horizontal scan passing through a retinal lesion; mean CTh and VD were then computed. A ratio (R) between the VD and the corresponding CTh was calculated. Results: Group 1, 2 and 3 mean age was 29.6, 29.1 and 45.9 years, respectively. Sixteen normal subjects, three myopic subjects and six NIU patients were male. Group 1 mean CTh did not differ from group 2 (261.6±45.6 vs. 260.2±50.6 µm µm; p>0.05); mean VD was marginally higher in Group 2 (159.8±32.2 vs. 163.2±33.2 µm; p>0.05). Group 3 demonstrated thinner CTh (193.6±54.6 µm) than Groups 1 and 2 (p = 0.02 and <0.001). Group 3 mean VD (123.6±37.4 µm) was also less than that in Groups 1 and 2; the difference was statistically significant only when compared to group 2, p = 0.01. R did not differ across groups (p-values >0.05), indicating that variations in CTh and VD followed the same trend. Conclusions: The study reports potential quantitative OCT-derived parameters that may be explored in future trials of non-infectious uveitis. Thinning of choroid and decrease of vessel diameter are observed in patients with chronic NIU compared to controls.

Original languageEnglish (US)
Article number14
JournalJournal of Ophthalmic Inflammation and Infection
Volume4
Issue number1
DOIs
StatePublished - Aug 16 2014

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Keywords

  • Choroidal inflammatory disease
  • Choroidal thickness
  • Non-infectious uveitis and white dot syndrome
  • Optical coherence tomography

ASJC Scopus subject areas

  • Ophthalmology
  • Infectious Diseases

Cite this

Bittencourt, M. G., Kherani, S., Ferraz, D. A., Ansari, M., Nasir, H., Sepah, Y. J., Hanout, M., Do, D. V., & Nguyen, Q. D. (2014). Variation of choroidal thickness and vessel diameter in patients with posterior non-infectious uveitis. Journal of Ophthalmic Inflammation and Infection, 4(1), [14]. https://doi.org/10.1186/s12348-014-0014-z