Comparison of Ocular Pulse Amplitude Measured Using Dynamic Contour Tonometry and Ocular Blood Flow Analyzer.
10.3341/jkos.2015.56.12.1906
- Author:
Yong Hyun KIM
1
;
Mar Vin LEE
;
Jae Hong AHN
Author Information
1. Department of Ophthalmology, Ajou University School of Medicine, Suwon, Korea. chrisahn@ajou.ac.kr
- Publication Type:Original Article
- Keywords:
Intraocular pressure;
Ocular blood flow;
Ocular pulse amplitude
- MeSH:
Humans;
Intraocular Pressure;
Manometry*;
Refractive Errors;
Retrospective Studies
- From:Journal of the Korean Ophthalmological Society
2015;56(12):1906-1912
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To compare ocular pulse amplitude (OPA) measured using dynamic contour tonometry (DCT) and ocular blood flow analyzer (BFA). METHODS: Thirty-five eyes of 35 patients were enrolled in this cross-sectional and retrospective study. OPA was measured using DCT. Pulse amplitude (PA) and pulsatile ocular blood flow were measured using BFA. RESULTS: OPA measured using DCT (2.79 +/- 0.89 mm Hg) was not significantly different from PA measured with BFA (3.02 +/- 0.90 mm Hg; p = 0.082) and both were significantly correlated (r = 0.663, p < 0.001). Mean difference +/- limit of agreement was -0.22 +/- 1.44 mm Hg between OPA and PA. OPA correlated significantly with intraocular pressure (IOP) measured using Goldmann applanation tonometry (r = 0.330, p = 0.047) but not PA (r = 0.057, p = 0.745). Both PA and OPA did not show significant correlation with the spherical equivalent of refractive error and central corneal thickness. CONCLUSIONS: Although both OPA and PA measure IOP fluctuation and are not significantly different, they showed different relationships with IOP.
