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Background: To longitudinally analyze and compare the accommodative micro-fluctuation (MFs) and accommodative function between myopic patients after implantable collamer lens (ICL) implantation and laser in situ keratomileusis (LASIK).
Methods: Patients with good corrected visual acuity (20/20 or better) that underwent ICL (V4c) and LASIK for myopic-correction (ranging from -3.50 to -8.50 D) were recruited. Refraction, amplitude of accommodation (AMP), accommodative lags, high-order aberrations (HOAs), and MFs were recorded before surgery and 1 and 3 months after surgery. The ACOMEREF automatic refractor was used to measure the high-frequency component (HFC) of the MFs, which suggested tension of the ciliary muscle.
Results: The study comprised 120 eyes. At 3 months after surgery, the manifest refractive spherical equivalent of the ICL and LASIK groups were -0.11 and -0.09 D, respectively (p = 0.46). HFC values were significantly higher at 1 month (p = 0.03) and 3 months postoperatively (p = 0.03) in the ICL group compared to that in the LASIK group. The ocular HOAs of the ICL group was 1.08 ± 0.43 μm, which was lower than the LASIK group 1.45 ± 0.54 μm (p = 0.01). No significant differences in AMP and accommodative lags between groups were noted at 3 months postoperatively. There was a positive correlation between HFC and vault of the ICL lens (r2 = 0.14, p = 0.005). There were no correlations between HFC and HOAs and postoperative MRSE in the two groups (all p﹥0.05).
Conclusions: The HFC increased significantly after ICL implantation compared to laser in situ keratomileusis for myopic correction, which indicated increased tension of the ciliary muscle, and had a positive correlation on the vault of the ICL lens; However, studies with longer follow-up time and more structural evaluation are needed.
Keywords
ICL implantation, LASIK, Accommodation, Accommodative micro-fluctuation
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CURRENT STATUS: Under Review
Version 1
Posted 09 Mar, 2021
No community comments so far
Editorial decision: Major revision
On 24 Apr, 2021
Review #2 received
Received 10 Apr, 2021
Review #1 received
Received 10 Apr, 2021
Reviewer #2 agreed
On 01 Apr, 2021
Reviewers invited
Invitations sent on 01 Apr, 2021
Reviewer #1 agreed
On 01 Apr, 2021
Editor assigned
On 23 Mar, 2021
Submission checks complete
On 03 Mar, 2021
Editor invited
On 25 Feb, 2021
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Subject Areas
Ophthalmology
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This preprint is under consideration at BMC Ophthalmology. A preprint is 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
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: Under Review
Version 1
Posted 09 Mar, 2021
No community comments so far
Editorial decision: Major revision
On 24 Apr, 2021
Review #2 received
Received 10 Apr, 2021
Review #1 received
Received 10 Apr, 2021
Reviewer #2 agreed
On 01 Apr, 2021
Reviewers invited
Invitations sent on 01 Apr, 2021
Reviewer #1 agreed
On 01 Apr, 2021
Editor assigned
On 23 Mar, 2021
Submission checks complete
On 03 Mar, 2021
Editor invited
On 25 Feb, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Ophthalmology
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background: To longitudinally analyze and compare the accommodative micro-fluctuation (MFs) and accommodative function between myopic patients after implantable collamer lens (ICL) implantation and laser in situ keratomileusis (LASIK).
Methods: Patients with good corrected visual acuity (20/20 or better) that underwent ICL (V4c) and LASIK for myopic-correction (ranging from -3.50 to -8.50 D) were recruited. Refraction, amplitude of accommodation (AMP), accommodative lags, high-order aberrations (HOAs), and MFs were recorded before surgery and 1 and 3 months after surgery. The ACOMEREF automatic refractor was used to measure the high-frequency component (HFC) of the MFs, which suggested tension of the ciliary muscle.
Results: The study comprised 120 eyes. At 3 months after surgery, the manifest refractive spherical equivalent of the ICL and LASIK groups were -0.11 and -0.09 D, respectively (p = 0.46). HFC values were significantly higher at 1 month (p = 0.03) and 3 months postoperatively (p = 0.03) in the ICL group compared to that in the LASIK group. The ocular HOAs of the ICL group was 1.08 ± 0.43 μm, which was lower than the LASIK group 1.45 ± 0.54 μm (p = 0.01). No significant differences in AMP and accommodative lags between groups were noted at 3 months postoperatively. There was a positive correlation between HFC and vault of the ICL lens (r2 = 0.14, p = 0.005). There were no correlations between HFC and HOAs and postoperative MRSE in the two groups (all p﹥0.05).
Conclusions: The HFC increased significantly after ICL implantation compared to laser in situ keratomileusis for myopic correction, which indicated increased tension of the ciliary muscle, and had a positive correlation on the vault of the ICL lens; However, studies with longer follow-up time and more structural evaluation are needed.
Figure 1
Figure 2
Figure 3
Figure 4
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