Abstract
Purpose :
To map and characterize the choroidal thickness over a wide area from the posterior pole to the vortex vein in normal eyes.
Methods :
This observational study included 146 healthy eyes (63 male). Using swept-source optical coherence tomography, 3D volume data were acquired to create a choroidal thickness map. The map was classified as type A if there was no area with a choroidal thickness >250 µm in the vertical direction from the optic disc and the area corresponding to the watershed or as type B if such an area was found. he relationship between ratio of groups A to B and age was compared by classifying age for the 3 age groups: <40, 40-60, and >60 years in men and women.
Results :
In men and women, 69.8% and 49.4% were classified as type A, respectively with significant sex differences (p=0.013) and also the proportions of the five subtypes were a significant difference between men and women (p<0.01)
The proportion of type B decreased with increasing age in both the sexes. There was a significant difference between ≦ 60 and > 60 years in men and between ≦ 40 and > 40 years in women (p<0.05).
Conclusions :
The wide-area choroidal thickness map of healthy eyes showed that the patterns differed between sexes and that the proportions differed across age groups.
This abstract was presented at the 2023 ARVO Annual Meeting, held in New Orleans, LA, April 23-27, 2023.