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Research article
Clinical differences between toric intraocular lens (IOL) and monofocal intraocular lens (IOL) implantation when myopia is determined as target refraction
Eun Chul Kim
Catholic University of Korea School of Medicine
Corresponding Author
ORCiD: https://orcid.org/0000-0002-0310-5663
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background: The aim of this study is to analyze and compare the clinical results of toric intraocular lens (IOL) and monofocal IOL implantation when the target refraction value is determined -3 diopter (D) in cataract patients with corneal astigmatism >1.5 diopters (D).
Methods: We performed a retrospective chart review for patients with corneal astigmatism >1.5D who underwent cataract surgery and their target refraction is determined -3D. 100 eyes (100 patients; monofocal IOL, 60; toric IOL, 40) were enrolled in the current study. Near and distant uncorrected visual acuity (UCVA), corrected VA, spherical equivalent and refractive, corneal astigmatism were evaluated before and after surgery.
Results: The near UCVA of the toric IOL group (0.26±0.33) after cataract surgery was significantly better than that of the monofocal IOL group (0.48±0.32) (p=0.030). The distant UCVA of the toric IOL group (0.38 ± 0.14) was also significantly better than that of the monofocal IOL group (0.55 ± 0.22) (p = 0.026). There were no significant intergroup differences in postoperative best-corrected visual acuity (p = 0.710) and mean spherical equivalent (p = 0.465). In the toric IOL group, postoperative refractive astigmatism was -0.80 ± 0.46D and postoperative corneal astigmatism was -1.50 ± 0.62D, whereas the corresponding values in the monofocal IOL group were -1.65 ± 0.77D and -1.45 ± 0.64D; residual refractive astigmatism was significantly lower with toric IOL implantation compared with monofocal IOL implantation (p = 0.001). There were no postoperative complications and no adverse events were reported.
Conclusions: When myopic refraction such as -3D was determined as the target power in patients with corneal astigmatism, toric IOL implantation led to excellent improvement in both near and distant UCVA.
Keywords
Toric intraocular lens implantation, Corneal astigmatism, Tecnis ZCT toric IOL, Myopia, Near visual acuity, Distant visual acuity
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CURRENT STATUS: Under Review
Version 2
Posted 24 Sep, 2020
No community comments so far
Review #1 received
Received 31 Oct, 2020
Reviewer #1 agreed
On 30 Oct, 2020
Reviewers invited
Invitations sent on 28 Oct, 2020
Editor assigned
On 23 Sep, 2020
Submission checks complete
On 22 Sep, 2020
Editor invited
On 22 Sep, 2020
No comments provided
Editorial decision: Minor revision
On 15 Sep, 2020
Review #2 received
Received 13 Sep, 2020
Reviewer #5 agreed
On 01 Sep, 2020
Reviewer #4 agreed
On 30 Aug, 2020
Reviewer #3 agreed
On 25 Aug, 2020
Reviewer #2 agreed
On 24 Aug, 2020
Review #1 received
Received 14 Aug, 2020
Reviewer #1 agreed
On 12 Aug, 2020
Editor assigned
On 11 Aug, 2020
Reviewers invited
Invitations sent on 11 Aug, 2020
Submission checks complete
On 10 Aug, 2020
Editor invited
On 10 Aug, 2020
First submitted
On 05 Aug, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
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
Clinical differences between toric intraocular lens (IOL) and monofocal intraocular lens (IOL) implantation when myopia is determined as target refraction
Eun Chul Kim
Catholic University of Korea School of Medicine
Corresponding Author
ORCiD: https://orcid.org/0000-0002-0310-5663
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 2
Posted 24 Sep, 2020
No community comments so far
Review #1 received
Received 31 Oct, 2020
Reviewer #1 agreed
On 30 Oct, 2020
Reviewers invited
Invitations sent on 28 Oct, 2020
Editor assigned
On 23 Sep, 2020
Submission checks complete
On 22 Sep, 2020
Editor invited
On 22 Sep, 2020
No comments provided
Editorial decision: Minor revision
On 15 Sep, 2020
Review #2 received
Received 13 Sep, 2020
Reviewer #5 agreed
On 01 Sep, 2020
Reviewer #4 agreed
On 30 Aug, 2020
Reviewer #3 agreed
On 25 Aug, 2020
Reviewer #2 agreed
On 24 Aug, 2020
Review #1 received
Received 14 Aug, 2020
Reviewer #1 agreed
On 12 Aug, 2020
Editor assigned
On 11 Aug, 2020
Reviewers invited
Invitations sent on 11 Aug, 2020
Submission checks complete
On 10 Aug, 2020
Editor invited
On 10 Aug, 2020
First submitted
On 05 Aug, 2020
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: The aim of this study is to analyze and compare the clinical results of toric intraocular lens (IOL) and monofocal IOL implantation when the target refraction value is determined -3 diopter (D) in cataract patients with corneal astigmatism >1.5 diopters (D).
Methods: We performed a retrospective chart review for patients with corneal astigmatism >1.5D who underwent cataract surgery and their target refraction is determined -3D. 100 eyes (100 patients; monofocal IOL, 60; toric IOL, 40) were enrolled in the current study. Near and distant uncorrected visual acuity (UCVA), corrected VA, spherical equivalent and refractive, corneal astigmatism were evaluated before and after surgery.
Results: The near UCVA of the toric IOL group (0.26±0.33) after cataract surgery was significantly better than that of the monofocal IOL group (0.48±0.32) (p=0.030). The distant UCVA of the toric IOL group (0.38 ± 0.14) was also significantly better than that of the monofocal IOL group (0.55 ± 0.22) (p = 0.026). There were no significant intergroup differences in postoperative best-corrected visual acuity (p = 0.710) and mean spherical equivalent (p = 0.465). In the toric IOL group, postoperative refractive astigmatism was -0.80 ± 0.46D and postoperative corneal astigmatism was -1.50 ± 0.62D, whereas the corresponding values in the monofocal IOL group were -1.65 ± 0.77D and -1.45 ± 0.64D; residual refractive astigmatism was significantly lower with toric IOL implantation compared with monofocal IOL implantation (p = 0.001). There were no postoperative complications and no adverse events were reported.
Conclusions: When myopic refraction such as -3D was determined as the target power in patients with corneal astigmatism, toric IOL implantation led to excellent improvement in both near and distant UCVA.
Figure 1
Figure 2
Figure 3