Digital versus slit-beam marking for toric intraocular lenses in cataract surgery
Abstract Purpose To compare the visual outcomes of digital and slit-beam manual marking for toric intraocular lenses (IOL) in cataract surgery. Setting Single-center, Beijing Tongren Hospital, China. Design Retrospective study. Methods All patients with cataracts and regular corneal astigmatism grea...
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| Format: | Article |
| Language: | English |
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BMC
2022-07-01
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| Series: | BMC Ophthalmology |
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| Online Access: | https://doi.org/10.1186/s12886-022-02548-y |
| _version_ | 1828778160334831616 |
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| author | Ning Ding Xiaozhen Wang Xudong Song |
| author_facet | Ning Ding Xiaozhen Wang Xudong Song |
| author_sort | Ning Ding |
| collection | DOAJ |
| description | Abstract Purpose To compare the visual outcomes of digital and slit-beam manual marking for toric intraocular lenses (IOL) in cataract surgery. Setting Single-center, Beijing Tongren Hospital, China. Design Retrospective study. Methods All patients with cataracts and regular corneal astigmatism greater than 0.75 diopters (D) underwent cataract surgery and astigmatism correction between June 2019 and June 2020. To mark the target axis of the toric IOL and the location of the incision, intraoperative digital marking was used by Callisto eye image-guided system in one group, while preoperative manual slit-beam marking was used in the other group. Uncorrected and best-corrected spectacle visual acuity, refraction, toric IOL axis, total higher order aberrations, coma, spherical aberration, and trefoil were evaluated at 1, 4, and 12 weeks postoperatively. Results Seventy-two eyes of 58 patients were included. At 3 months after surgery, the mean residual refractive cylinder was 0.42 ± 0.45D in the digital group and 0.39 ± 0.40D in the manual group (P = 0.844). There were no significant differences between groups in spherical equivalent refraction, uncorrected and best-corrected spectacle visual acuity, or the parameters of vector analysis. All toric IOL alignment errors were within 10° of the intended axis, and among them, about 42% of eyes in the digital group and 61% of eyes in the manual group had a rotation of 0–2° (P = 0.038). Trefoil in the manual group decreased postoperatively compared with the digital group (P = 0.012). Other aberration analyses did not reveal any statistical differences between groups. Conclusions Accurate slit-beam manual marking and digital image-guided marking are equally effective for toric IOL alignment. |
| first_indexed | 2024-12-11T16:35:47Z |
| format | Article |
| id | doaj.art-2742a9e637d644d1818975a78280c349 |
| institution | Directory Open Access Journal |
| issn | 1471-2415 |
| language | English |
| last_indexed | 2024-12-11T16:35:47Z |
| publishDate | 2022-07-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Ophthalmology |
| spelling | doaj.art-2742a9e637d644d1818975a78280c3492022-12-22T00:58:27ZengBMCBMC Ophthalmology1471-24152022-07-012211810.1186/s12886-022-02548-yDigital versus slit-beam marking for toric intraocular lenses in cataract surgeryNing Ding0Xiaozhen Wang1Xudong Song2Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Ophthalmology & Visual Science Key Laboratory, Capital Medical UniversityBeijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Ophthalmology & Visual Science Key Laboratory, Capital Medical UniversityBeijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Ophthalmology & Visual Science Key Laboratory, Capital Medical UniversityAbstract Purpose To compare the visual outcomes of digital and slit-beam manual marking for toric intraocular lenses (IOL) in cataract surgery. Setting Single-center, Beijing Tongren Hospital, China. Design Retrospective study. Methods All patients with cataracts and regular corneal astigmatism greater than 0.75 diopters (D) underwent cataract surgery and astigmatism correction between June 2019 and June 2020. To mark the target axis of the toric IOL and the location of the incision, intraoperative digital marking was used by Callisto eye image-guided system in one group, while preoperative manual slit-beam marking was used in the other group. Uncorrected and best-corrected spectacle visual acuity, refraction, toric IOL axis, total higher order aberrations, coma, spherical aberration, and trefoil were evaluated at 1, 4, and 12 weeks postoperatively. Results Seventy-two eyes of 58 patients were included. At 3 months after surgery, the mean residual refractive cylinder was 0.42 ± 0.45D in the digital group and 0.39 ± 0.40D in the manual group (P = 0.844). There were no significant differences between groups in spherical equivalent refraction, uncorrected and best-corrected spectacle visual acuity, or the parameters of vector analysis. All toric IOL alignment errors were within 10° of the intended axis, and among them, about 42% of eyes in the digital group and 61% of eyes in the manual group had a rotation of 0–2° (P = 0.038). Trefoil in the manual group decreased postoperatively compared with the digital group (P = 0.012). Other aberration analyses did not reveal any statistical differences between groups. Conclusions Accurate slit-beam manual marking and digital image-guided marking are equally effective for toric IOL alignment.https://doi.org/10.1186/s12886-022-02548-yCorneal astigmatismMarkingIOL misalignmentToric IOLCallisto eye image-guided systemCataract surgery |
| spellingShingle | Ning Ding Xiaozhen Wang Xudong Song Digital versus slit-beam marking for toric intraocular lenses in cataract surgery BMC Ophthalmology Corneal astigmatism Marking IOL misalignment Toric IOL Callisto eye image-guided system Cataract surgery |
| title | Digital versus slit-beam marking for toric intraocular lenses in cataract surgery |
| title_full | Digital versus slit-beam marking for toric intraocular lenses in cataract surgery |
| title_fullStr | Digital versus slit-beam marking for toric intraocular lenses in cataract surgery |
| title_full_unstemmed | Digital versus slit-beam marking for toric intraocular lenses in cataract surgery |
| title_short | Digital versus slit-beam marking for toric intraocular lenses in cataract surgery |
| title_sort | digital versus slit beam marking for toric intraocular lenses in cataract surgery |
| topic | Corneal astigmatism Marking IOL misalignment Toric IOL Callisto eye image-guided system Cataract surgery |
| url | https://doi.org/10.1186/s12886-022-02548-y |
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