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Research article
Young Taek Chung
Onnuri Smile Eye Clinic
Corresponding Author
ORCiD: https://orcid.org/0000-0002-8203-8445
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Purpose
To compare the changes in the anterior segment after femtosecond laser in situ keratomileusis (FS-LASIK) and small incision lenticule extraction (SMILE) using a dual rotating Scheimpflug (DRS) analyzer (Galilei®; Ziemer Ophthalmology, Port, Switzerland).
Setting
Onnuri smile eye clinic, Seoul, South Korea
Design
Retrospective
Method
218 eyes of 109 patients underwent FS-LASIK or SMILE for myopic correction. Ninety-eight eyes of 49 patients who underwent FS-LASIK were compared to 120 eyes of 60 patients treated with SMILE. A DRS analyzer was used for preoperative and 6-month postoperative anterior segment analyses. Measured variables included the central corneal thickness (CCT), anterior chamber depth (ACD), anterior and posterior keratometry (K), anterior and posterior best-fit sphere radius, and maximum posterior elevation (MPE).
Results
The estimated lenticule thickness (LT; 87.20 ± 22.87 µm) was significantly thicker in the SMILE group than the ablation depth (69.23 ± 22.24 µm) in the FS-LASIK group. However, there was no significant difference in the CCT decrease using the DRS analyzer. The MPE was significantly increased after both procedures, and there was a statistically significant difference in the change in MPE between the two groups (-1.10 ± 2.12 µm after FS-LASIK; -0.75 ± 2.33 µm after SMILE; p = 0.035).
Conclusions
The preoperative LT was overestimated using SMILE. Regarding changes in the MPE and posterior K, changes in the posterior corneal surface were greater after FS-LASIK than after SMILE.
Keywords
Small incision lenticule extraction; SMILE; LASIK; FS-LASIK; Galilei; dual rotating scheimpflug analyzer
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Peer Review Timeline
CURRENT STATUS: Published
View the published article at BMC Ophthalmology.
No community comments so far
Editorial decision: Accept
On 22 Nov, 2019
Editor assigned
On 21 Nov, 2019
Submission checks complete
On 20 Nov, 2019
Editor invited
On 20 Nov, 2019
No comments provided
Editorial decision: Minor revision
On 19 Nov, 2019
Review #1 received
Received 06 Nov, 2019
Reviewers invited
Invitations sent on 24 Oct, 2019
Reviewer #1 agreed
On 24 Oct, 2019
Editor assigned
On 20 Aug, 2019
Submission checks complete
On 19 Aug, 2019
Editor invited
On 19 Aug, 2019
No comments provided
Editorial decision: Major revision
On 04 Aug, 2019
Review #1 received
Received 10 Jul, 2019
Reviewer #1 agreed
On 03 Jul, 2019
Reviewers invited
Invitations sent on 30 Jun, 2019
Submission checks complete
On 30 May, 2019
Editor invited
On 30 May, 2019
Editor assigned
On 30 May, 2019
Version 1
Posted 13 Apr, 2019
No comments provided
Editorial decision: Minor revision
On 22 May, 2019
Review #1 received
Received 20 May, 2019
Review #2 received
Received 15 May, 2019
Reviewer #2 agreed
On 09 May, 2019
Reviewer #1 agreed
On 06 May, 2019
Editor assigned
On 17 Apr, 2019
Reviewers invited
Invitations sent on 17 Apr, 2019
Submission checks complete
On 10 Apr, 2019
Editor invited
On 10 Apr, 2019
First submitted
On 19 Mar, 2019
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Internal Medicine Specialties
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A new preprint design is coming!
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See the published version of this preprint at BMC Ophthalmology.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research article
Young Taek Chung
Onnuri Smile Eye Clinic
Corresponding Author
ORCiD: https://orcid.org/0000-0002-8203-8445
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
View the published article at BMC Ophthalmology.
No community comments so far
Editorial decision: Accept
On 22 Nov, 2019
Editor assigned
On 21 Nov, 2019
Submission checks complete
On 20 Nov, 2019
Editor invited
On 20 Nov, 2019
No comments provided
Editorial decision: Minor revision
On 19 Nov, 2019
Review #1 received
Received 06 Nov, 2019
Reviewers invited
Invitations sent on 24 Oct, 2019
Reviewer #1 agreed
On 24 Oct, 2019
Editor assigned
On 20 Aug, 2019
Submission checks complete
On 19 Aug, 2019
Editor invited
On 19 Aug, 2019
No comments provided
Editorial decision: Major revision
On 04 Aug, 2019
Review #1 received
Received 10 Jul, 2019
Reviewer #1 agreed
On 03 Jul, 2019
Reviewers invited
Invitations sent on 30 Jun, 2019
Submission checks complete
On 30 May, 2019
Editor invited
On 30 May, 2019
Editor assigned
On 30 May, 2019
Version 1
Posted 13 Apr, 2019
No comments provided
Editorial decision: Minor revision
On 22 May, 2019
Review #1 received
Received 20 May, 2019
Review #2 received
Received 15 May, 2019
Reviewer #2 agreed
On 09 May, 2019
Reviewer #1 agreed
On 06 May, 2019
Editor assigned
On 17 Apr, 2019
Reviewers invited
Invitations sent on 17 Apr, 2019
Submission checks complete
On 10 Apr, 2019
Editor invited
On 10 Apr, 2019
First submitted
On 19 Mar, 2019
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Internal Medicine Specialties
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at BMC Ophthalmology.
Purpose
To compare the changes in the anterior segment after femtosecond laser in situ keratomileusis (FS-LASIK) and small incision lenticule extraction (SMILE) using a dual rotating Scheimpflug (DRS) analyzer (Galilei®; Ziemer Ophthalmology, Port, Switzerland).
Setting
Onnuri smile eye clinic, Seoul, South Korea
Design
Retrospective
Method
218 eyes of 109 patients underwent FS-LASIK or SMILE for myopic correction. Ninety-eight eyes of 49 patients who underwent FS-LASIK were compared to 120 eyes of 60 patients treated with SMILE. A DRS analyzer was used for preoperative and 6-month postoperative anterior segment analyses. Measured variables included the central corneal thickness (CCT), anterior chamber depth (ACD), anterior and posterior keratometry (K), anterior and posterior best-fit sphere radius, and maximum posterior elevation (MPE).
Results
The estimated lenticule thickness (LT; 87.20 ± 22.87 µm) was significantly thicker in the SMILE group than the ablation depth (69.23 ± 22.24 µm) in the FS-LASIK group. However, there was no significant difference in the CCT decrease using the DRS analyzer. The MPE was significantly increased after both procedures, and there was a statistically significant difference in the change in MPE between the two groups (-1.10 ± 2.12 µm after FS-LASIK; -0.75 ± 2.33 µm after SMILE; p = 0.035).
Conclusions
The preoperative LT was overestimated using SMILE. Regarding changes in the MPE and posterior K, changes in the posterior corneal surface were greater after FS-LASIK than after SMILE.
Figure 1
Figure 2
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