Comparison of different intraocular pressure measurement techniques in normal eyes, post surface and post lamellar refractive surgery

Comparison of different intraocular pressure measurement techniques in normal eyes, post surface and post lamellar refractive surgery

Shireen MA Shousha, Mahmoud AH Abo Steit, Mohamed HM Hosny, Wael A Ewais, Ahmad MM ShalabyDepartment of Ophthalmology, Faculty of Medicine, Cairo University, Cairo, EgyptBackground: The purpose of this study was to determine the accuracy of intraocular pressure (IOP) measurement after laser in situ...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Shousha SM, Abo Steit MA, Hosny MH, Ewais WA, Shalaby AM
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2013
Materias:
Ophthalmology
RE1-994
Acceso en línea:https://doaj.org/article/75c7eb359d8e4f60aaaf120f8b4a2d93
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:75c7eb359d8e4f60aaaf120f8b4a2d93
record_format dspace
spelling oai:doaj.org-article:75c7eb359d8e4f60aaaf120f8b4a2d932021-12-02T09:07:48ZComparison of different intraocular pressure measurement techniques in normal eyes, post surface and post lamellar refractive surgery1177-54671177-5483https://doaj.org/article/75c7eb359d8e4f60aaaf120f8b4a2d932013-01-01T00:00:00Zhttp://www.dovepress.com/comparison-of-different-intraocular-pressure-measurement-techniques-in-a11892https://doaj.org/toc/1177-5467https://doaj.org/toc/1177-5483Shireen MA Shousha, Mahmoud AH Abo Steit, Mohamed HM Hosny, Wael A Ewais, Ahmad MM ShalabyDepartment of Ophthalmology, Faculty of Medicine, Cairo University, Cairo, EgyptBackground: The purpose of this study was to determine the accuracy of intraocular pressure (IOP) measurement after laser in situ keratomileusis (LASIK) or epithelial laser in situ keratomileusis (Epi)-LASIK using Goldmann applanation tonometry, air puff tonometry, ocular response analyzer corneal compensated IOP (ORA IOPcc) and Pentacam corrected IOP.Methods: A prospective comparative clinical study was conducted between February and September 2011 on 30 eyes divided into four groups, i.e. 20 corneas of 10 patients before LASIK (group A), 20 corneas of the same patients 2 months postoperatively (group B), 10 corneas of five patients before Epi-LASIK (group C), and 10 corneas of the same patients 2 months postoperatively (group D). Patient age ranged from 20 to 50 years. IOP was measured using Goldmann applanation and air puff tonometry, ORA corneal compensation, and Pentacam correction (which also measured central corneal thickness).Results: Significant positive linear correlations were found between IOP values measured by Goldmann applanation tonometry and other techniques, and with preoperative pachymetry in group A. The correlation between preoperative Pentacam-corrected and preoperative ORA corneal-compensated IOP was strongest for Goldmann applanation tonometry (r = 0.97 and r = 0.858 respectively, P < 0.001). Compared with preoperative values, postoperative IOP measured by the four methods were significantly lower. The difference was statistically significant when IOP was measured using Goldmann applanation and air puff tonometry compared with the ORA and Pentacam methods (P < 0.001 for LASIK patients and P = 0.017 for Epi-LASIK patients). Nonsignificant correlations were found between the degree of lowering of postoperative IOP and postoperative pachymetry in groups B and D.Conclusion: Refractive surgery causes significant lowering of IOP as measured using Goldmann applanation tonometry, air puff tonometry, ORA compensation, and Pentacam correction. LASIK has a greater effect than Epi-LASIK on IOP measurement error following refractive surgery.Keywords: intraocular pressure measurement, refractive surgery, corneal biomechanics, corneal thicknessShousha SMAbo Steit MAHosny MHEwais WAShalaby AMDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2013, Iss default, Pp 71-79 (2013)
institution DOAJ
collection DOAJ
language EN
topic Ophthalmology
RE1-994
spellingShingle Ophthalmology
RE1-994
Shousha SM
Abo Steit MA
Hosny MH
Ewais WA
Shalaby AM
Comparison of different intraocular pressure measurement techniques in normal eyes, post surface and post lamellar refractive surgery
description Shireen MA Shousha, Mahmoud AH Abo Steit, Mohamed HM Hosny, Wael A Ewais, Ahmad MM ShalabyDepartment of Ophthalmology, Faculty of Medicine, Cairo University, Cairo, EgyptBackground: The purpose of this study was to determine the accuracy of intraocular pressure (IOP) measurement after laser in situ keratomileusis (LASIK) or epithelial laser in situ keratomileusis (Epi)-LASIK using Goldmann applanation tonometry, air puff tonometry, ocular response analyzer corneal compensated IOP (ORA IOPcc) and Pentacam corrected IOP.Methods: A prospective comparative clinical study was conducted between February and September 2011 on 30 eyes divided into four groups, i.e. 20 corneas of 10 patients before LASIK (group A), 20 corneas of the same patients 2 months postoperatively (group B), 10 corneas of five patients before Epi-LASIK (group C), and 10 corneas of the same patients 2 months postoperatively (group D). Patient age ranged from 20 to 50 years. IOP was measured using Goldmann applanation and air puff tonometry, ORA corneal compensation, and Pentacam correction (which also measured central corneal thickness).Results: Significant positive linear correlations were found between IOP values measured by Goldmann applanation tonometry and other techniques, and with preoperative pachymetry in group A. The correlation between preoperative Pentacam-corrected and preoperative ORA corneal-compensated IOP was strongest for Goldmann applanation tonometry (r = 0.97 and r = 0.858 respectively, P < 0.001). Compared with preoperative values, postoperative IOP measured by the four methods were significantly lower. The difference was statistically significant when IOP was measured using Goldmann applanation and air puff tonometry compared with the ORA and Pentacam methods (P < 0.001 for LASIK patients and P = 0.017 for Epi-LASIK patients). Nonsignificant correlations were found between the degree of lowering of postoperative IOP and postoperative pachymetry in groups B and D.Conclusion: Refractive surgery causes significant lowering of IOP as measured using Goldmann applanation tonometry, air puff tonometry, ORA compensation, and Pentacam correction. LASIK has a greater effect than Epi-LASIK on IOP measurement error following refractive surgery.Keywords: intraocular pressure measurement, refractive surgery, corneal biomechanics, corneal thickness
format article
author Shousha SM
Abo Steit MA
Hosny MH
Ewais WA
Shalaby AM
author_facet Shousha SM
Abo Steit MA
Hosny MH
Ewais WA
Shalaby AM
author_sort Shousha SM
title Comparison of different intraocular pressure measurement techniques in normal eyes, post surface and post lamellar refractive surgery
title_short Comparison of different intraocular pressure measurement techniques in normal eyes, post surface and post lamellar refractive surgery
title_full Comparison of different intraocular pressure measurement techniques in normal eyes, post surface and post lamellar refractive surgery
title_fullStr Comparison of different intraocular pressure measurement techniques in normal eyes, post surface and post lamellar refractive surgery
title_full_unstemmed Comparison of different intraocular pressure measurement techniques in normal eyes, post surface and post lamellar refractive surgery
title_sort comparison of different intraocular pressure measurement techniques in normal eyes, post surface and post lamellar refractive surgery
publisher Dove Medical Press
publishDate 2013
url https://doaj.org/article/75c7eb359d8e4f60aaaf120f8b4a2d93
work_keys_str_mv AT shoushasm comparisonofdifferentintraocularpressuremeasurementtechniquesinnormaleyespostsurfaceandpostlamellarrefractivesurgery
AT abosteitma comparisonofdifferentintraocularpressuremeasurementtechniquesinnormaleyespostsurfaceandpostlamellarrefractivesurgery
AT hosnymh comparisonofdifferentintraocularpressuremeasurementtechniquesinnormaleyespostsurfaceandpostlamellarrefractivesurgery
AT ewaiswa comparisonofdifferentintraocularpressuremeasurementtechniquesinnormaleyespostsurfaceandpostlamellarrefractivesurgery
AT shalabyam comparisonofdifferentintraocularpressuremeasurementtechniquesinnormaleyespostsurfaceandpostlamellarrefractivesurgery
_version_ 1718398251433984000

Ejemplares similares