L Muller1, T Kohnen. 1. Klinik für Augenheilkunde, Johann Wolfgang Goethe-Universität, Frankfurt am Main, Deutschland.
Abstract
PURPOSE: The purpose of this study was to compare the influence of residual bed thickness after myopic ablation on intraocular pressure measurements using Goldmann applanation tonometry and dynamic contour tonometry. METHODS: Intraocular pressure using Goldmann tonometry and dynamic contour tonometry was measured in 50 eyes before, 1 and 3 months after LASIK for myopia. LASIK surgery reduced the central corneal thickness by 71+/-27 microm. During surgery, corneal thickness was measured by optical coherence pachymetry (Online OCP, 4 optics AG) prior to flap creation, after flap lifting, and after laser ablation. RESULTS: Postoperative measurements with Goldmann tonometry were reduced by -3.7 mmHg (p<10(-6)) and mean measurements with dynamic contour tonometry were reduced by -1.5 mmHg (p<10(-6)). Differences in measurements with Goldmann tonometry were significantly correlated with thickness of residual bed after ablation, whereas measurements with dynamic contour tonometry were not. CONCLUSIONS: Thickness of residual bed appears to influence readings with Goldmann tonometry more than readings with dynamic contour tonometry after myopic LASIK.
PURPOSE: The purpose of this study was to compare the influence of residual bed thickness after myopic ablation on intraocular pressure measurements using Goldmann applanation tonometry and dynamic contour tonometry. METHODS: Intraocular pressure using Goldmann tonometry and dynamic contour tonometry was measured in 50 eyes before, 1 and 3 months after LASIK for myopia. LASIK surgery reduced the central corneal thickness by 71+/-27 microm. During surgery, corneal thickness was measured by optical coherence pachymetry (Online OCP, 4 optics AG) prior to flap creation, after flap lifting, and after laser ablation. RESULTS: Postoperative measurements with Goldmann tonometry were reduced by -3.7 mmHg (p<10(-6)) and mean measurements with dynamic contour tonometry were reduced by -1.5 mmHg (p<10(-6)). Differences in measurements with Goldmann tonometry were significantly correlated with thickness of residual bed after ablation, whereas measurements with dynamic contour tonometry were not. CONCLUSIONS: Thickness of residual bed appears to influence readings with Goldmann tonometry more than readings with dynamic contour tonometry after myopic LASIK.
Authors: Jay S Pepose; Susan K Feigenbaum; Mujtaba A Qazi; Jeffrey P Sanderson; Cynthia J Roberts Journal: Am J Ophthalmol Date: 2006-10-20 Impact factor: 5.258
Authors: Gauti Jóhannesson; Christina Lindén; Anders Eklund; Anders Behndig; Per Hallberg Journal: Graefes Arch Clin Exp Ophthalmol Date: 2014-07-17 Impact factor: 3.117