Abstract
Purpose :
To compare ocular biometric parameters between primary angle closure suspects (PACS) and acute primary angle closure (APAC)
Methods :
This cross-sectional study was performed on 36 patients including 27 cases of PACS and 9 subjects with APAC. Central corneal thickness (CCT), axial length (AL), aqueous depth (AD)，pupil diameter (PD ) and lens thickness (LT) were measured with Lenstar. The ratio of PD/LT was calculated. In the PACS group, only data from the right eyes were compared. In the APAC group, the fellow eye was used as a proxy measure of the pre-APAC attack state for which there are no topical eyedrop treatment particularly miotic or LPI applied. Logistic regression analysis was performed to identify risk factors.
Results :
Compared with PACS, APAC had a significantly shallower AD (P=0.000, 1.6±0.1 mm VS 1.9±0.2 mm)，smaller PD (P=0.04, 3.2±0.1 mm VS 3.7±0.5 mm) and smaller PD/LT (P=0.036, 0.7±0.1 VS 0.8±0.1). In the APAC group, AD (P=0.036) was the only significant risk factor.
Conclusions :
This study indicated a shallower AD is a strong prediction of APAC. In PACS patients, a very shallow AD need further interventions before APAC attack. Because of the small sample size, further research need to be conducted.
This abstract was presented at the 2024 ARVO Annual Meeting, held in Seattle, WA, May 5-9, 2024.