Hashemi H, Khabazkhoob M, Nabovati P, Yazdani N, Ostadimoghaddam H, Shiralivand E, Derakhshan A, Yekta A. Distribution of IOP measured with an air puff tonometer in a young population.
J Curr Ophthalmol 2018;
30:35-41. [PMID:
29564406 PMCID:
PMC5859631 DOI:
10.1016/j.joco.2016.11.002]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 11/06/2016] [Accepted: 11/06/2016] [Indexed: 11/25/2022] Open
Abstract
Purpose
To determine the normal range of intraocular pressure (IOP) in the young and its association with certain corneal parameters using a non-contact device.
Methods
Subjects were selected from students of Mashhad University of Medical Sciences through stratified sampling. All participants had visual acuity testing, corneal imaging, a comprehensive slit-lamp examination by an ophthalmologist, and IOP measurement using a non-contact air-puff tonometer.
Results
Of the 1280 invitees, 1073 (83.8%) participated, and 1027 were eligible. Mean IOP was 16.38 mmHg [95% confidence interval (CI): 16.22–16.53] in the total sample, 16.14 mmHg (95% CI: 15.84–16.45) in men, and 16.48 mmHg (95% CI: 16.31–16.66) in women. There was a significant IOP difference between myopes and emmetropes (P = 0.031). Based on the multiple linear regression model, IOP associated directly with age and central corneal thickness (CCT), and inversely with corneal diameter, spherical equivalent (SE), and keratoconus. Based on standardized coefficients of the regression model, CCT and SE had the strongest association with IOP.
Conclusions
In the present study, we demonstrated the IOP distribution in a young population using a non-contact method. CCT and SE were strongly associated with IOP.
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