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Effect of microkeratome suction duration on corneal flap thickness and incision angle

Authors
 Kyoung Yul Seo  ;  Xiu H. Wan  ;  Jae W. Jang  ;  Jae Bum Lee  ;  Moon J. Kim  ;  Eung Kweon Kim 
Citation
 JOURNAL OF REFRACTIVE SURGERY, Vol.18(6) : 715-719, 2002 
Journal Title
 JOURNAL OF REFRACTIVE SURGERY 
ISSN
 1081-597X 
Issue Date
2002
MeSH
Animals ; Cornea/surgery* ; Corneal Topography ; Keratomileusis, Laser In Situ* ; Microscopy, Video ; Ophthalmologic Surgical Procedures* ; Suction* ; Surgical Flaps/pathology* ; Swine ; Time Factors
Abstract
To determine the effect of suction duration on corneal flap thickness and incision angle of the cut margin created by a microkeratome in a porcine eye. Thirty porcine eyes were randomly assigned to three groups according to different suction duration: group 1 (10 sec), group 2 (35 sec), and group 3 (60 sec). The Hansatome microkeratome with a #160 plate and 8.5-mm-diameter suction ring was used to create a corneal flap with a diameter of 8.5 millimeters. Corneal flap thickness was measured by automated ultrasonic pachymetry, and the incision angle was assessed by measuring the angle of a sagittal section of the cornea using image analysis software. Mean corneal flap thickness in groups 1 (10 sec), 2 (35 sec), and 3 (60 sec) was 87.8 +/- 22.0 microm, 116.0 +/- 7.0 microm, and 127.2 +/- 16.8 microm, respectively. There was a statistically significant difference between groups 1 (10 sec) and 2 (35 sec) (P=.005) and groups 1 and 3 (P=.004). The mean incision angle in groups 1, 2, and 3 was 34.8 +/- 9.0 degrees, 44.4 +/- 16.1 degrees, and 48.24 +/- 15.3 degrees, respectively. A statistically significant difference was found between groups 1 (10 sec) and 2 (35 sec) (P=.044) and groups 1 (10 sec) and 3 (60 sec) (P<.001). In laser in situ keratomileusis in porcine eyes, an increase in suction duration resulted in a thicker flap and greater incision angle.
Full Text
http://search.proquest.com/docview/220136436/fulltext?accountid=15179
DOI
10.3928/1081-597X-20021101-08
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
Seo, Kyuong Yul(서경률) ORCID logo https://orcid.org/0000-0002-9855-1980
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/144491
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