Effects of Valsalva Maneuver on Anterior Chamber Parameters and Choroidal Thickness in Healthy Chinese: An AS-OCT and SS-OCT Study
Xingyi Li, Wei Wang, Shida Chen, Wenbin Huang, Yaoming Liu, Jiawei Wang, Mingguang He, Xiulan Zhang
Investigative Ophthalmology & Visual Science | ASSOC RESEARCH VISION OPHTHALMOLOGY INC | Published : 2016
PURPOSE: This study concurrently evaluated the effects of the Valsalva maneuver (VM) on the anterior and posterior ocular biometric parameters in a healthy Chinese cohort. METHODS: This prospective, cross-sectional study used anterior segment optical coherence tomography (AS-OCT) and swept-source optical coherence tomography (SS-OCT) to measure the anterior and posterior ocular biometric parameters before and during the VM. Sixty-three volunteers (126 eyes; 17 males and 46 females) were enrolled. The IOP, blood pressure (BP), and refractive error were recorded before and during a VM. RESULTS: The mean IOP showed a statistically significant increase (from 13.86-14.25 mm Hg, P = 0.005), but th..View full abstract
Awarded by National Natural Science Foundation of China
Awarded by Science and Technology Program of Guangdong Province
Awarded by Science and Technology Program of Guangzhou
Supported by grants from the National Natural Science Foundation of China (81371008), the Science and Technology Program of Guangdong Province (2013B020400003), and the Science and Technology Program of Guangzhou (15570001).