Abstract
Purpose :
To investigate the relationship between the peripapillary choroidal thickness (PPCT) and peripapillary retinal tilt (PRT), axial length, papillo-macular position (PMP) in young healthy eyes.
Methods :
Prospective observational cross-sectional study comprised 119 right eyes of 119 healthy young Japanese participants. PPCT was manually measured at eight locations around the optic disc using the B-scan image of the TOPCON 3D OCT-1000 MARK II RNFL 3.4 mm circle scan. The trajectory of the retinal pigment epithelium of the B-scan image was fitted to sine curve using Image J and the amplitude of the sine curve was used for the degree of the PRT. PMP was assessed using color fundus photograph. The relationship between the PPCT and the PRT, the axial length or PMP were investigated using the Spearman and multiple correlation analysis.
Results :
The mean age was 25.8 ± 3.9 years and the mean axial length was 25.5 ± 1.4 mm. The PPCT was significantly and negatively associated with the axial length (R=-0.43~-0.24, p<0.01) and positively associated with the PMP (R=0.28~0.37, p<0.01) in all eight locations. The temporal and infra-temporal PPCT were significantly and negatively associated with the PRT (R=-0.31, -0.20, p<0.05). The results of multiple regression analysis were similar to that of Spearman correlation analysis.
Conclusions :
The PPCT decreased as the axial length increased and PMP decreased. The temporal and infra-temporal PPCT decreased as the PRT increased.
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.