Topographic and surgical risk factors for high postoperative residual astigmatism after small incision lenticule extraction in patients with different degrees of myopia: a retrospective cohort study
Abstract Background To evaluate the possible topographic and surgical risk factors for high postoperative residual astigmatism in patients who undergo small-incision lenticule extraction (SMILE) surgery and have different myopia degrees. Methods A retrospective cohort study was conducted, and patien...
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| Format: | Article |
| Language: | English |
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BMC
2024-01-01
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| Series: | BMC Ophthalmology |
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| Online Access: | https://doi.org/10.1186/s12886-024-03296-x |
| _version_ | 1827328153537740800 |
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| author | Chia-Yi Lee Jen-Hsiang Shen Chen-Cheng Chao Ie-Bin Lian Jing-Yang Huang Shun-Fa Yang Chao-Kai Chang |
| author_facet | Chia-Yi Lee Jen-Hsiang Shen Chen-Cheng Chao Ie-Bin Lian Jing-Yang Huang Shun-Fa Yang Chao-Kai Chang |
| author_sort | Chia-Yi Lee |
| collection | DOAJ |
| description | Abstract Background To evaluate the possible topographic and surgical risk factors for high postoperative residual astigmatism in patients who undergo small-incision lenticule extraction (SMILE) surgery and have different myopia degrees. Methods A retrospective cohort study was conducted, and patients who underwent SMILE surgery were enrolled. A total of 80 and 150 eyes from 40 to 75 individuals, respectively, were selected as the low myopia and high myopia groups. The demographic data, visual acuity, refraction, topographic parameters and surgical settings were recorded. Multiple linear regression with interaction tests were performed to survey the risk factors for high postoperative residual astigmatism in each group. Results Five (6.25%) and 9 (6.00%) eyes presented with high postoperative residual astigmatism in the low myopia and high myopia groups, respectively, but these differences were not significant (P = 0.569). A steep corneal curvature was correlated with a greater risk of high postoperative residual astigmatism in the low myopia group (P = 0.015), while a higher degree of cycloplegic cylinder power, steeper corneal curvature, greater topographic cylinder power, smaller optic zone and longer incision length were associated with a high rate of postoperative residual astigmatism in the high myopia group (all P < 0.05). In addition, the interaction effects of cycloplegic and topographic cylinder power and longer incision length on the incidence of high postoperative residual astigmatism development were more evident in the high myopia group than in the low myopia group (all P < 0.05). Conclusions A steep corneal curvature correlates with a high risk of high postoperative residual astigmatism after SMILE surgery, and a higher degree of cycloplegic and topographic cylinder and longer incision are associated with high postoperative residual astigmatism in individuals with high myopia. |
| first_indexed | 2024-03-07T15:13:49Z |
| format | Article |
| id | doaj.art-307e75c4b2524aebbb8ed8c2adddc0a6 |
| institution | Directory Open Access Journal |
| issn | 1471-2415 |
| language | English |
| last_indexed | 2024-03-07T15:13:49Z |
| publishDate | 2024-01-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Ophthalmology |
| spelling | doaj.art-307e75c4b2524aebbb8ed8c2adddc0a62024-03-05T18:02:10ZengBMCBMC Ophthalmology1471-24152024-01-012411910.1186/s12886-024-03296-xTopographic and surgical risk factors for high postoperative residual astigmatism after small incision lenticule extraction in patients with different degrees of myopia: a retrospective cohort studyChia-Yi Lee0Jen-Hsiang Shen1Chen-Cheng Chao2Ie-Bin Lian3Jing-Yang Huang4Shun-Fa Yang5Chao-Kai Chang6Institute of Medicine, Chung Shan Medical UniversityNobel Eye InstituteNobel Eye InstituteInstitute of Statistical and Information Science, National Changhua University of EducationDepartment of Medical Research, Chung Shan Medical University HospitalInstitute of Medicine, Chung Shan Medical UniversityNobel Eye InstituteAbstract Background To evaluate the possible topographic and surgical risk factors for high postoperative residual astigmatism in patients who undergo small-incision lenticule extraction (SMILE) surgery and have different myopia degrees. Methods A retrospective cohort study was conducted, and patients who underwent SMILE surgery were enrolled. A total of 80 and 150 eyes from 40 to 75 individuals, respectively, were selected as the low myopia and high myopia groups. The demographic data, visual acuity, refraction, topographic parameters and surgical settings were recorded. Multiple linear regression with interaction tests were performed to survey the risk factors for high postoperative residual astigmatism in each group. Results Five (6.25%) and 9 (6.00%) eyes presented with high postoperative residual astigmatism in the low myopia and high myopia groups, respectively, but these differences were not significant (P = 0.569). A steep corneal curvature was correlated with a greater risk of high postoperative residual astigmatism in the low myopia group (P = 0.015), while a higher degree of cycloplegic cylinder power, steeper corneal curvature, greater topographic cylinder power, smaller optic zone and longer incision length were associated with a high rate of postoperative residual astigmatism in the high myopia group (all P < 0.05). In addition, the interaction effects of cycloplegic and topographic cylinder power and longer incision length on the incidence of high postoperative residual astigmatism development were more evident in the high myopia group than in the low myopia group (all P < 0.05). Conclusions A steep corneal curvature correlates with a high risk of high postoperative residual astigmatism after SMILE surgery, and a higher degree of cycloplegic and topographic cylinder and longer incision are associated with high postoperative residual astigmatism in individuals with high myopia.https://doi.org/10.1186/s12886-024-03296-xSmall incision lenticule extractionAstigmatismCorneal curvatureTopographyMyopia |
| spellingShingle | Chia-Yi Lee Jen-Hsiang Shen Chen-Cheng Chao Ie-Bin Lian Jing-Yang Huang Shun-Fa Yang Chao-Kai Chang Topographic and surgical risk factors for high postoperative residual astigmatism after small incision lenticule extraction in patients with different degrees of myopia: a retrospective cohort study BMC Ophthalmology Small incision lenticule extraction Astigmatism Corneal curvature Topography Myopia |
| title | Topographic and surgical risk factors for high postoperative residual astigmatism after small incision lenticule extraction in patients with different degrees of myopia: a retrospective cohort study |
| title_full | Topographic and surgical risk factors for high postoperative residual astigmatism after small incision lenticule extraction in patients with different degrees of myopia: a retrospective cohort study |
| title_fullStr | Topographic and surgical risk factors for high postoperative residual astigmatism after small incision lenticule extraction in patients with different degrees of myopia: a retrospective cohort study |
| title_full_unstemmed | Topographic and surgical risk factors for high postoperative residual astigmatism after small incision lenticule extraction in patients with different degrees of myopia: a retrospective cohort study |
| title_short | Topographic and surgical risk factors for high postoperative residual astigmatism after small incision lenticule extraction in patients with different degrees of myopia: a retrospective cohort study |
| title_sort | topographic and surgical risk factors for high postoperative residual astigmatism after small incision lenticule extraction in patients with different degrees of myopia a retrospective cohort study |
| topic | Small incision lenticule extraction Astigmatism Corneal curvature Topography Myopia |
| url | https://doi.org/10.1186/s12886-024-03296-x |
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