PMID: 8942897Nov 1, 1996Paper

Direct objective quantification of corneal haze after excimer laser photorefractive keratectomy for high myopia

Ophthalmology
M J MaldonadoJ L Menezo

Abstract

The purpose of the study is to measure regional distribution differences in corneal haze after excimer laser photorefractive keratectomy for high myopia. The authors developed computerized gradient edge detectors with which were analyzed digitized anterior slit-lamp photographs of 40 eyes, an average of 21.0 plus or minus 14.5 weeks after photorefractive keratectomy for high myopia (-6 to -22 diopters). A treated area an adjacent untreated area on the anterior corneal surface, each containing six regions, were quantified, and the difference was correlated with various parameters. Mean differences between scarred and clear areas for haze grade 0.5, 1.0, 2.0, 3.0, and 4.0 were 16.9, 26.6, 42.6, 60.4, and 76.4 gray levels, respectively (rs = 0.96; P = 0.0001). A low but statistically significant correlation between the intended correction and postoperative corneal haze was found (r = 0.33; P = 0.037). The mean coefficient of variation of the amount of opacification within each treated area was 9.4%. This coefficient of variation increased with a longer follow-up time (r = 0.88; P = 0.0001). The difference in the intensity of haze between the center and more peripheral regions over the entrance pupil did not correlate with the atte...Continue Reading

References

Sep 1, 1992·Archives of Ophthalmology·T SeilerT Pham
Jul 1, 1992·Archives of Ophthalmology·N A SherW B Telfair
May 1, 1990·Archives of Ophthalmology·F E FantesM Savoldelli
Jul 1, 1994·Ophthalmology·R Gibralter, S L Trokel
Mar 1, 1994·Ophthalmology·D Z ReinsteinD J Coleman
Jul 1, 1995·Journal of Cataract and Refractive Surgery·J L MenezoA Cisneros
Dec 1, 1995·Ophthalmology·M J MaldonadoJ L Menezo

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Citations

May 3, 2002·Ophthalmology·Miguel J Maldonado
Nov 1, 2002·International Ophthalmology Clinics·Robert W ThompsonFrancis W Price
Sep 28, 2006·Investigative Ophthalmology & Visual Science·Russell L McCallyDimitri T Azar
Sep 17, 2002·Journal of Cataract and Refractive Surgery·Christopher WirbelauerDuy Thoai Pham
Dec 18, 2015·Experimental Eye Research·Andre A M TorricelliSteven E Wilson
Nov 24, 2005·Contact Lens & Anterior Eye : the Journal of the British Contact Lens Association·Clare O'Donnell, James S Wolffsohn
Mar 12, 2008·Expert Review of Medical Devices·Miguel J MaldonadoDavid P Piñero
Aug 3, 2010·Journal of Refractive Surgery·Agnes I TakacsZoltan Z Nagy
Jun 13, 2019·Seminars in Ophthalmology·Thomas H DohlmanReza Dana
Apr 16, 2014·Academic Emergency Medicine : Official Journal of the Society for Academic Emergency Medicine·Neil WaldmanPeter Herbison
Feb 6, 2021·Saudi Journal of Ophthalmology : Official Journal of the Saudi Ophthalmological Society·Ashbala Khattak, Fouad An-Nakhli
Oct 16, 2020·Journal of Cellular and Molecular Medicine·Francesco PetrilloMichele D'Amico

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