The course of corneal and intraocular pressure changes during pregnancy

Canadian Journal of Ophthalmology. Journal Canadien D'ophtalmologie
Yasemin Kozluca EfeSuat Hayri Ugurbas

Abstract

To determine concurrent changes in corneal thickness, intraocular pressure (IOP), and corneal topography measurements during normal pregnancy. Prospective cohort study. We studied 50 eyes from 25 healthy women whose ages ranged from 21 to 35 years and who were first seen during the 10th week of pregnancy. Measurements included IOP (noncontact tonometry); corneal thickness (ultrasound pachymetry); and corneal topography (TMS 2N, TOMEY, Nagoya, Japan). Changes in IOP, central corneal thickness (CCT), and corneal power were calculated at 4 time periods: first trimester, second trimester, third trimester, and 3 months postpartum. The mean IOPs in the second and third trimesters of pregnancy were found to be lower than those in the first trimester and at 3 months postpartum (p = 0.001). The mean CCT in the second and third trimester of pregnancy was measured to be higher than in the first trimester and at 3 months postpartum (p < 0.001). Both IOP and CCT returned to first-trimester levels following delivery. In the third trimester, a 3.1% increase in CCT was associated with a 9.5 % decrease in IOP. Topographic measurements did not show statistically significant changes throughout the trimesters or after pregnancy. An increase in CCT...Continue Reading

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Citations

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