Author/Authors :
Razeghinejad, Mohammad-Reza shiraz university of medical sciences, شيراز, ايران , Amini, Heydar tehran university of medical sciences tums, تهران, ايران , Torkaman, Fatemeh shiraz university of medical sciences, شيراز, ايران , Tabatabaee, Hamid-Reza shiraz university of medical sciences, شيراز, ايران
Abstract :
Purpose: To investigate the correlation between central corneal thickness (CCT) andintraocular pressure (IOP) measured by Schiotz and Goldmann tonometers.Methods: CCT and IOP were determined by ultrasonic pachymetry and with theGoldmann and Schiotz tonometers, respectively. The correlation between IOP measuredby Goldmann and Schiotz tonometers on one hand and CCT on the other, was determinedby regression analysis.Results: Overall, 168 eyes of 168 glaucoma patients including 85 male (50.6%) and 83 female (49.4%) subjects with mean age of 54.6±19.8 (range 7-85) years were evaluated.Mean CCT was 547.6±53.02 (range: 446-848) ìm without any significant differencebetween men and women (P=0.811). IOP was correlated with CCT with both types oftonometry: every 20(mu)m change in CCT was associated with 1.9±1.4 mmHg and1.54±0.95 mmHg change in IOP as measured by the Goldmann and Schiotz tonometersrespectively with no statistically significant difference between the two devices (P=0.6).Conclusion: IOP measurement by Schiotz tonometry is affected by CCT to the same extent as Goldmann applanation tonometry.
