Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits


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Study of the measure of the IOP (intraocular pressure) with ORA, Corvis and GAT (Goldmann applanation tonometer) in a healthy population

Poster Details

First Author: M. Martinez SPAIN

Co Author(s):    J. Gros Otero   J. Paz Moreno Arrones   M. Teus Guezala              

Abstract Details


To study the behavior of the measure of the IOP in a healthy population conducting a comparative study between ORA, Corvis and GAT tonometers


GAT has been the gold standar tonometer. In recent times have been developed new tonometers that take into account the corneal biomechanical properties. Reproducibility is not yet established


ORA IOP measures, Corvis and GAT measures patients were performed in 110 eyes of 55 in a healthy population with no history of disease or ophthalmologic surgery.


The difference between IOP in OD and OI measured with GAT was 14.80 ± 2.7 OD vs 14.2 ± 3.8 OI p = 0.1; Corvis IOP 13.9 ± 2.1 OD vs 15.1 ± 4.0 OI p = 0.08; IOPcc 16.39 ± 3.69 OD vs 16.2 ± 3.9 OI p = 0.1; IOPg 15.9 ± 2.6 OD vs 15.7 ± 3.98 OI p = 0.2. We maked a comparison of IOP obtained by GAT with that obtained by Corvis and ORA: GAT IOP vs Corvis IOP p = 0.1, GAT IOP vs IOPcc p = 0.0003 and GAT IOP vs IOPg p = 0.009.


We found no statistically significant differences between OD and OI in the pressure obtained by the different tonometers used in this study. The tonometer measures obtained with the 3 tonometers are comparable, but in our study we found less difference between GAT and Corvis between GAT and ORA

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