Reproducibility of IntraLASIK Flap Thickness Measured with Optical Coherence Tomography.
10.3341/jkos.2007.48.12.1630
- Author:
Hee Jung KIM
1
;
Sae Hoon OH
;
Do Hyung LEE
;
Jong Hyun LEE
;
Kang Il RHEE
;
Jin Hyoung KIM
Author Information
1. Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Gyeonggi, Korea. jhk0924@hanmail.net
- Publication Type:Original Article
- Keywords:
Corneal flap thickness;
Intralase femtosecond laser;
Optical coherence tomography
- MeSH:
Corneal Pachymetry;
Humans;
Keratomileusis, Laser In Situ;
Tomography, Optical Coherence*;
Ultrasonography
- From:Journal of the Korean Ophthalmological Society
2007;48(12):1630-1635
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To investigate the relationship among optical coherence tomography (OCT), ultrasound pachymetry, and Orbscan in central corneal thickness measurement and to evaluate the reproducibility of flap thickness using an IntraLase femtosecond laser. METHODS: Central corneal thickness was measured by OCT, ultrasound pachymetry, and Orbscan in 59 eyes of 30 patients before LASIK. After IntraLASIK, the corneal flap thickness measured using OCT was compared with the intended corneal flap thickness. RESULTS: Central corneal thickness measured by OCT was thinner than that measured by other instruments preoperatively, but there was no significant difference among these methods (p>0.01), and corneal thickness values obtained by ultrasound pachymetry and Orbscan correlated well with those obtained by OCT (r ranged from 0.804 to 0.889, p<0.01). After IntraLASIK, there was no significant difference between the mean measured flap thickness and the intended flap thickness (p>0.01). CONCLUSIONS: OCT is a relatively accurate instrument for measuring corneal thickness and can easily measure the corneal flap thickness after LASIK. Compared with the results of a previous study, the mean measured flap thickness in this study was more reproducible with the IntraLase femtosecond laser.
