Influence of Ocular Residual Astigmatism on the Correction of Myopic Astigmatism by Toric Implantable Collamer Lens: A Comparative Study With Femtosecond Laser Small Incision Lenticule Extraction
PurposeTo evaluate the influence of the origin of astigmatism on the correction of myopic astigmatism by toric implantable collamer lens (TICL) and compare it with femtosecond laser small incision lenticule extraction (SMILE).MethodsOcular residual astigmatism (ORA) was determined by vector analysis...
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Frontiers Media S.A.
2022-06-01
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmed.2022.828492/full |
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| author | Ling Sun Ling Sun Ling Sun Xiaoyu Zhang Xiaoyu Zhang Xiaoyu Zhang Lan Ding Lan Ding Lan Ding Yang Shen Yang Shen Yang Shen Yishan Qian Yishan Qian Yishan Qian Xingtao Zhou Xingtao Zhou Xingtao Zhou |
| author_facet | Ling Sun Ling Sun Ling Sun Xiaoyu Zhang Xiaoyu Zhang Xiaoyu Zhang Lan Ding Lan Ding Lan Ding Yang Shen Yang Shen Yang Shen Yishan Qian Yishan Qian Yishan Qian Xingtao Zhou Xingtao Zhou Xingtao Zhou |
| author_sort | Ling Sun |
| collection | DOAJ |
| description | PurposeTo evaluate the influence of the origin of astigmatism on the correction of myopic astigmatism by toric implantable collamer lens (TICL) and compare it with femtosecond laser small incision lenticule extraction (SMILE).MethodsOcular residual astigmatism (ORA) was determined by vector analysis using manifest refraction and Scheimpflug camera imaging of the anterior cornea. One-to-one matching between the TICL and SMILE groups was performed by preoperative manifest refractive astigmatism (RA) and ORA, tolerating a maximum difference of 0.50 diopter (D) for RA and 0.25 D for ORA. Patients of each group were further divided into groups according to ORA (high > 1.0 D; low ≤ 1.0 D). The baseline and 12-month postoperative data were analyzed. Data are expressed as mean ± standard deviation (SD). A value of p less than 0.05 was considered statistically significant.ResultsFor the TICL group, no significant differences in the postoperative RA, safety index, efficacy index, index of success (IOS), correction index (CI), and angle of error (AOE) were found between high (n = 36) and low ORA (n = 36) groups (Mann–Whitney U test, p > 0.05). For the SMILE group, the postoperative RA (high: −0.67 ± 0.43 D, low: −0.39 ± 0.29 D, Mann–Whitney U test, p = 0.003) and IOS (high: 0.50 ± 0.43, low: 0.25 ± 0.23, Mann–Whitney U test, p = 0.003) were greater in the high ORA group. When comparing TICL and SMILE groups, the mean postoperative RA (TICL: −0.48 ± 0.29 D, SMILE: −0.67 ± 0.43 D, Mann–Whitney U test, p = 0.03) and IOS (TICL: 0.32 ± 0.23, SMILE: 0.50 ± 0.43, Mann–Whitney U test, p = 0.03) were significantly higher in the SMILE group when the ORA was >1.0 D.ConclusionBoth TICL and SMILE are effective in correcting myopic astigmatism. ORA has a lesser effect on TICL than on SMILE. |
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| spelling | doaj.art-e3cc88e08a2549cba2e42ba6d4dfdf642022-12-22T02:29:17ZengFrontiers Media S.A.Frontiers in Medicine2296-858X2022-06-01910.3389/fmed.2022.828492828492Influence of Ocular Residual Astigmatism on the Correction of Myopic Astigmatism by Toric Implantable Collamer Lens: A Comparative Study With Femtosecond Laser Small Incision Lenticule ExtractionLing Sun0Ling Sun1Ling Sun2Xiaoyu Zhang3Xiaoyu Zhang4Xiaoyu Zhang5Lan Ding6Lan Ding7Lan Ding8Yang Shen9Yang Shen10Yang Shen11Yishan Qian12Yishan Qian13Yishan Qian14Xingtao Zhou15Xingtao Zhou16Xingtao Zhou17Department of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, ChinaLaboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, ChinaShanghai Research Center of Ophthalmology and Optometry, Shanghai, ChinaDepartment of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, ChinaLaboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, ChinaShanghai Research Center of Ophthalmology and Optometry, Shanghai, ChinaDepartment of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, ChinaLaboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, ChinaShanghai Research Center of Ophthalmology and Optometry, Shanghai, ChinaDepartment of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, ChinaLaboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, ChinaShanghai Research Center of Ophthalmology and Optometry, Shanghai, ChinaDepartment of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, ChinaLaboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, ChinaShanghai Research Center of Ophthalmology and Optometry, Shanghai, ChinaDepartment of Ophthalmology, Eye and ENT Hospital, Fudan University, Shanghai, ChinaLaboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai, ChinaShanghai Research Center of Ophthalmology and Optometry, Shanghai, ChinaPurposeTo evaluate the influence of the origin of astigmatism on the correction of myopic astigmatism by toric implantable collamer lens (TICL) and compare it with femtosecond laser small incision lenticule extraction (SMILE).MethodsOcular residual astigmatism (ORA) was determined by vector analysis using manifest refraction and Scheimpflug camera imaging of the anterior cornea. One-to-one matching between the TICL and SMILE groups was performed by preoperative manifest refractive astigmatism (RA) and ORA, tolerating a maximum difference of 0.50 diopter (D) for RA and 0.25 D for ORA. Patients of each group were further divided into groups according to ORA (high > 1.0 D; low ≤ 1.0 D). The baseline and 12-month postoperative data were analyzed. Data are expressed as mean ± standard deviation (SD). A value of p less than 0.05 was considered statistically significant.ResultsFor the TICL group, no significant differences in the postoperative RA, safety index, efficacy index, index of success (IOS), correction index (CI), and angle of error (AOE) were found between high (n = 36) and low ORA (n = 36) groups (Mann–Whitney U test, p > 0.05). For the SMILE group, the postoperative RA (high: −0.67 ± 0.43 D, low: −0.39 ± 0.29 D, Mann–Whitney U test, p = 0.003) and IOS (high: 0.50 ± 0.43, low: 0.25 ± 0.23, Mann–Whitney U test, p = 0.003) were greater in the high ORA group. When comparing TICL and SMILE groups, the mean postoperative RA (TICL: −0.48 ± 0.29 D, SMILE: −0.67 ± 0.43 D, Mann–Whitney U test, p = 0.03) and IOS (TICL: 0.32 ± 0.23, SMILE: 0.50 ± 0.43, Mann–Whitney U test, p = 0.03) were significantly higher in the SMILE group when the ORA was >1.0 D.ConclusionBoth TICL and SMILE are effective in correcting myopic astigmatism. ORA has a lesser effect on TICL than on SMILE.https://www.frontiersin.org/articles/10.3389/fmed.2022.828492/fullocular residual astigmatismmyopic astigmatism correctionstoric implantable collamer lensfemtosecond laser small incision lenticule extractionvector analysis |
| spellingShingle | Ling Sun Ling Sun Ling Sun Xiaoyu Zhang Xiaoyu Zhang Xiaoyu Zhang Lan Ding Lan Ding Lan Ding Yang Shen Yang Shen Yang Shen Yishan Qian Yishan Qian Yishan Qian Xingtao Zhou Xingtao Zhou Xingtao Zhou Influence of Ocular Residual Astigmatism on the Correction of Myopic Astigmatism by Toric Implantable Collamer Lens: A Comparative Study With Femtosecond Laser Small Incision Lenticule Extraction Frontiers in Medicine ocular residual astigmatism myopic astigmatism corrections toric implantable collamer lens femtosecond laser small incision lenticule extraction vector analysis |
| title | Influence of Ocular Residual Astigmatism on the Correction of Myopic Astigmatism by Toric Implantable Collamer Lens: A Comparative Study With Femtosecond Laser Small Incision Lenticule Extraction |
| title_full | Influence of Ocular Residual Astigmatism on the Correction of Myopic Astigmatism by Toric Implantable Collamer Lens: A Comparative Study With Femtosecond Laser Small Incision Lenticule Extraction |
| title_fullStr | Influence of Ocular Residual Astigmatism on the Correction of Myopic Astigmatism by Toric Implantable Collamer Lens: A Comparative Study With Femtosecond Laser Small Incision Lenticule Extraction |
| title_full_unstemmed | Influence of Ocular Residual Astigmatism on the Correction of Myopic Astigmatism by Toric Implantable Collamer Lens: A Comparative Study With Femtosecond Laser Small Incision Lenticule Extraction |
| title_short | Influence of Ocular Residual Astigmatism on the Correction of Myopic Astigmatism by Toric Implantable Collamer Lens: A Comparative Study With Femtosecond Laser Small Incision Lenticule Extraction |
| title_sort | influence of ocular residual astigmatism on the correction of myopic astigmatism by toric implantable collamer lens a comparative study with femtosecond laser small incision lenticule extraction |
| topic | ocular residual astigmatism myopic astigmatism corrections toric implantable collamer lens femtosecond laser small incision lenticule extraction vector analysis |
| url | https://www.frontiersin.org/articles/10.3389/fmed.2022.828492/full |
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