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First Author: A.Grise-Dulac FRANCE
Co Author(s): A. Saad J. Febbraro D. Gatinel
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Intraocular pressure measurement is part of the arsenal of monitoring the evolution of glaucoma. Lasik surgery by modifying corneal biomechanics and reducing corneal thickness makes measures given by the Goldman applanation tonometer unreliables. The objective of this study was to analyze IOP measurements provided by the Ocular Response Analyzer (ORA) and the biomechanical parameters that may assist in monitoring glaucoma in these operated eyes.
Fondation Rothschild, Paris
14 eyes of 7 patients with chronic open-angle glaucoma, who underwent Lasik surgery before or after the discovery of glaucoma, were analyzed. For each eye, Goldman intraocular pressure, central corneal thickness and corneal biomechanical parameters given by the ORA (IOPg, IOPcc, CH, CRF ...) were measured.
Central corneal thickness was low for all patients (478 +/-78.52 ?m). Goldman IOP (10.8 +/-1.13 mmHg) was lower than IOPg (16.91 +/-11.92 mmHg) and IOPcc (19.64 +/-11.95 mmHg) given by the ORA. CH (8.15 +/-2.25 mmHg) and CRF (8.91 +/-2.78 mmHg) were both low in these subjects.
The analysis of IOP and corneal biomechanics in glaucomatous patients with Lasik operated corneas can help monitoring glaucoma in these special patients.