Evaluation of choroidal thickness in light-coloured eyes


Vural E., Hazar L., Caglayan M., ÇELEBİ A. R. C.

EUROPEAN JOURNAL OF OPHTHALMOLOGY, 2021 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume:
  • Publication Date: 2021
  • Doi Number: 10.1177/11206721211029470
  • Title of Journal : EUROPEAN JOURNAL OF OPHTHALMOLOGY
  • Keywords: Choroid, iris thickness, light-coloured, retinal thickness, OPTICAL COHERENCE TOMOGRAPHY, IRIS THICKNESS, BLUE EYES, AGE, ASSOCIATION, SEGMENT, MYOPIA

Abstract

Objective: The aim of this study was to determine whether iris colour is related to the choroidal thickness of healthy individuals. Methods: Healthy participants were divided into two groups. Group 1 had light-coloured eyes (blue and green), and group 2 had dark-coloured eyes (brown). The main outcome measures were iris thickness, subfoveal choroidal thickness and nasal and temporal choroidal thicknesses 500 mu m away from the fovea. Results: Group 1 comprised 31 subjects with light-coloured eyes, and group 2 had 31 subjects with dark eyes. The mean ages of groups 1 and 2 were 26.7 +/- 7.5 years and 24.1 +/- 5.8 years, respectively (p = 0.14). The choroidal thicknesses of the subfoveal, nasal and temporal regions were 336.3 +/- 52.1 mu m, 321.9 +/- 43.6 mu m and 318.4 +/- 49.2 mu m, respectively, in group 1 and 396.5 +/- 76.9 mu m, 372 +/- 79.3 mu m and 379.6 +/- 82.4 mu m, respectively, in group 2. All the values in group 1 were statistically lower than those in group 2 (p = 0.001, p = 0.001 and p = 0.003, respectively). The iris thickness in group 1 (493.73 +/- 95.44 mu m) was thinner than in group 2 (524.61 +/- 69.74 mu m) but not statistically significant (p = 0.141). Conclusion: The results showed that a thinner choroid can be seen in disease-free light-coloured eyes. The iris colour should be considered among the factors affecting the choroidal thickness, such as age, sex, race and refractive error.