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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Corneal biomechanical parameters in different types of glaucoma

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Session Details

Session Title: Presented Poster Session: Corneal Biomechanics

Session Date/Time: Saturday 10/09/2016 | 15:00-16:30

Paper Time: 15:50

Venue: Poster Village: Pod 4

First Author: : G.Seymenońülu TURKEY

Co Author(s): :    E. Baser              

Abstract Details


The aim of this study is to compare the corneal biomechanical parameters in different types of glaucoma and to evaluate how these properties possibly influence intraocular pressure (IOP) measurements.


Celal Bayar University Hafsa Sultan Hospital, Department of Ophthalmology


Data from 400 patients followed in our glaucoma unit for ocular hypertension (OHT), primary open-angle glaucoma (POAG), primary angle-closure glaucoma (PACG), pseudoexfoliative glaucoma (PXG) and normal-tension glaucoma (NTG) were reviewed. Corneal hysteresis (CH), corneal resistance factor (CRF), Goldmann-correlated IOP (IOPg), corneal-compensated IOP (IOPcc) values measured with Ocular Response Analyzer were recorded. Central corneal thickness (CCT) measurements were also performed with ultrasonic pachymeter. Corneal biomechanical properties and CCT were compared between different glaucoma groups.


The mean CRF of NTG(8.5) and PXG(8.7) groups were significantly lower than those of the POAG(10.6) group (p: 0.001). The mean CH of NTG(7.9) and PXG(8.4) groups were significantly lower than those of POAG(9.6), PACG(9.8) and OHT10.8) groups (p: 0.001). The mean CCT of NTG(554) and PXG(533) groups were significantly thinner than those of all other glaucoma groups (p: 0.001). IOPcc measurements of NTG and PXG groups were significantly lower than all other glaucoma groups (p: 0.001).The mean IOPg - IOPcc difference was significantly different between the NTG and PXG groups compared to POAG and PACG groups, and between the OHT group compared to POAG and PACG groups (p: 0.000).


Corneal biomechanical parameters vary between different glaucoma types. This may lead clinicians to measure Goldmann IOP measurements lower than actual in PXG and NTG patients, and higher in OHT patients.

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