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Central Corneal Thickness Measurements in Unoperated Eyes and Eyes After PRK For Myopia Using Pentacam, Orbscan II, and Ultrasonic Pachymetry

Authors
 Sun Woong Kim  ;  Yeo Jue Byun  ;  Tae-im Kim  ;  Eung Kweon Kim 
Citation
 Journal of Refractive Surgery, Vol.23(9) : 888-894, 2007 
Journal Title
 Journal of Refractive Surgery 
ISSN
 1081-597X 
Issue Date
2007
Abstract
PURPOSE: To compare central corneal thickness measurements obtained in unoperated eyes and eyes after myopic photorefractive keratectomy (PRK) using a rotating Scheimpflug camera (Pentacam), a scanning slit corneal topography system (Orbscan II), and ultrasonic pachymetry. METHODS: Corneal thickness was measured using Pentacam, Orbscan II, and ultrasonic pachymetry in 25 unoperated eyes (unoperated group), 24 eyes 1 to 3 months after myopic PRK (early postoperative PRK group), and 21 eyes 4 months or more after myopic PRK (late postoperative PRK group). RESULTS: In the unoperated group, corneal thickness measurements were similar for all three methods (P=.125). In the early postoperative PRK group, Orbscan measurements were thinner than Pentacam and ultrasonic measurements by a mean of 69.4 microm and 63.4 microm (P<.001 and P=.002, respectively). In the late postoperative PRK group, Orbscan measurements were thinner than Pentacam measurements by a mean of 36.0 microm (P=.017). Pentacam and ultrasonic pachymetry measurements were similar for all three groups with a mean difference of approximately 10 microm. CONCLUSIONS: Following myopic PRK, Pentacam was comparable to ultrasonic pachymetry in measuring corneal thickness, whereas Orbscan measurements were thinner.
Full Text
http://www.healio.com/ophthalmology/journals/jrs/2007-11-23-9/%7Bb359945e-3f1b-40e7-b297-57192d47a11a%7D/central-corneal-thickness-measurements-in-unoperated-eyes-and-eyes-after-prk-for-myopia-using-pentacam-orbscan-ii-and-ultrasonic-pachymetry
DOI
10.3928/1081-597X-20071101-04
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Eung Kweon(김응권) ORCID logo https://orcid.org/0000-0002-1453-8042
Kim, Tae Im(김태임) ORCID logo https://orcid.org/0000-0001-6414-3842
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/96523
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