Please use this identifier to cite or link to this item: https://doi.org/10.3928/1081597X-20130318-02
Title: Comparison of four different VisuMax circle patterns for flap creation after small incision lenticule extraction
Authors: Riau, A.K.
Ang, H.P.
Lwin, N.C.
Chaurasia, S.S.
Tan, D.T.
Mehta, J.S. 
Issue Date: Apr-2013
Citation: Riau, A.K., Ang, H.P., Lwin, N.C., Chaurasia, S.S., Tan, D.T., Mehta, J.S. (2013-04). Comparison of four different VisuMax circle patterns for flap creation after small incision lenticule extraction. Journal of Refractive Surgery 29 (4) : 236-244. ScholarBank@NUS Repository. https://doi.org/10.3928/1081597X-20130318-02
Abstract: PURPOSE: To compare four different Circle patterns for flap creation after small incision lenticule extraction (SMILE). METHODS: SMILE was performed on six rabbits. Twenty- eight days after the initial procedure, corneal flaps were created using Circle patterns. Rabbits were divided into four groups (patterns A, B, C, and D). Pattern A creates a circular side cut to meet the cap cut within the clearance zone (outside of the optical zone). Patterns B, C, and D create a lamellar ring posterior, anterior, and at the same depth, respectively, to the cap to meet the cap cut in the clearance zone with the help of a junction cut. Difficulty of flap lift was graded from 1 (easiest) to 5 (most difficult). The bed quality was assessed by scanning electron microscopy. RESULTS: Flaps created by patterns A and D were the easiest to lift (grade 2). The resulting flap bed was smooth and undisrupted. However, pattern A resulted in a reduced re-treatment area. Flaps created by pattern B were the most difficult to lift (grade 4). The stromal dissection was difficult in an attempt to ascertain the original optical zone from the lamellar ring, placed posterior. Flaps produced by pattern C were easy to lift, with minor intrastromal resistance experienced during the lifting process (grade 3). The transition between the lamellar ring and cap cut was hardly discernible in pattern C-treated corneas. CONCLUSIONS: Pattern D, a lamellar ring adjacent to the cap cut, was the most optimal to be used for flap creation in cases of SMILE re-treatment. Copyright © SLACK Incorporated.
Source Title: Journal of Refractive Surgery
URI: http://scholarbank.nus.edu.sg/handle/10635/110509
ISSN: 1081597X
DOI: 10.3928/1081597X-20130318-02
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

29
checked on Oct 15, 2018

WEB OF SCIENCETM
Citations

30
checked on Oct 8, 2018

Page view(s)

34
checked on Oct 19, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.