Simple method of measuring ocular rotation in supine position during small incision lenticule extraction
AIM: To introduce a novel measurement method of static cyclotorsion in small incision lenticule extraction (SMILE) and to investigate the effect of preoperative parameters on cyclotorsion and the effect of cyclotorsion on postoperative outcomes. METHODS: The medical records of 242 patients and 484 e...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Press of International Journal of Ophthalmology (IJO PRESS)
2022-08-01
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| Series: | International Journal of Ophthalmology |
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| Online Access: | http://ies.ijo.cn/en_publish/2022/8/20220816.pdf |
| _version_ | 1818041106359648256 |
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| author | Jiho Song Hwanho Lee Moon Sun Jung Jae-hyung Kim |
| author_facet | Jiho Song Hwanho Lee Moon Sun Jung Jae-hyung Kim |
| author_sort | Jiho Song |
| collection | DOAJ |
| description | AIM: To introduce a novel measurement method of static cyclotorsion in small incision lenticule extraction (SMILE) and to investigate the effect of preoperative parameters on cyclotorsion and the effect of cyclotorsion on postoperative outcomes. METHODS: The medical records of 242 patients and 484 eyes who underwent SMILE surgery were retrospectively reviewed. Preoperative intraocular pressure, refractive error, and corneal thickness were investigated. Refractive values and visual acuity were measured at 1d, 1, 3, and 6mo. Ocular cyclotorsion in the supine position was measured by calculating the location and angle of the incision site of the cornea in the anterior slit photograph taken after surgery. RESULTS: Of the total 484 eyes in 242 patients, preoperative mean spherical equivalent (SE) was -4.10±1.64 D, and the mean astigmatism was -0.82±0.74 D. Uncorrected distance visual acuity (UCVA) and SE improved significantly after the surgery. Moreover, 219 (45.2%) eyes had excyclotorsion, 235 (48.6%) eyes had incyclotorsion, and 30 (6.2%) eyes had no torsion. The right eyes tended to be excyclotorted, and the left eyes tended to be incyclotorted (P<0.01). The mean cyclotorsion was 1.18°±3.69°, and the mean absolute value of cyclotorsion was 3.14°±2.26°. The range of cyclotorsion was 0.5°–11.4°. It was found that the smaller the preoperative sphere, the higher the amount of cyclotorsion (r=0.11, P=0.016). There was no significant association between the amount of cyclotorsion and preoperative astigmatism. There was no correlation between sex, preoperative corneal thickness, preoperative intraocular pressure, amount of cyclotorsion, and direction of cyclotorsion. The ratio of right eye excyclotorsion and left eye incyclotorsion on 1d was higher than that at 1, 3, and 6mo (all P<0.01). There was no difference between the 1, 3, and 6mo results in the right and left eyes (P=0.15, P=0.16, respectively). CONCLUSION: The newly devised ocular cyclotorsion measurement method can be used to evaluate ocular cyclotorsion after SMILE. Preoperative SE is associated with the amount of cyclotorsion, however, cyclotorsion doesn't have a significant effect on the results of SMILE surgery. |
| first_indexed | 2024-12-10T08:25:09Z |
| format | Article |
| id | doaj.art-d75bb6c7f521447a8f3e0b0c8e49dd13 |
| institution | Directory Open Access Journal |
| issn | 2222-3959 2227-4898 |
| language | English |
| last_indexed | 2024-12-10T08:25:09Z |
| publishDate | 2022-08-01 |
| publisher | Press of International Journal of Ophthalmology (IJO PRESS) |
| record_format | Article |
| series | International Journal of Ophthalmology |
| spelling | doaj.art-d75bb6c7f521447a8f3e0b0c8e49dd132022-12-22T01:56:15ZengPress of International Journal of Ophthalmology (IJO PRESS)International Journal of Ophthalmology2222-39592227-48982022-08-011581331133710.18240/ijo.2022.08.1620220816Simple method of measuring ocular rotation in supine position during small incision lenticule extractionJiho Song0Hwanho Lee1Moon Sun Jung2Jae-hyung Kim3Jae-hyung Kim. Seoul Daabom Eye Center, 15, Pungsan-ro, Heungdeok-gu, Cheongju, Chungbuk 28396, Republic of Korea. jkim@daabom.com; Moon Sun Jung. Department of Ophthalmology, Chungbuk National University Hospital,1sunwhan-ro 776, Seowon-gu, Cheongju, Chungbuk 28644, Republic of Korea. msjung@chungbuk.ac.krDepartment of Ophthalmology, Chungbuk National University Hospital, College of Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of KoreaDepartment of Ophthalmology, Chungbuk National University Hospital, College of Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of KoreaSeoul Daabom Eye Center, Cheongju, Chungbuk 28396, Republic of KoreaAIM: To introduce a novel measurement method of static cyclotorsion in small incision lenticule extraction (SMILE) and to investigate the effect of preoperative parameters on cyclotorsion and the effect of cyclotorsion on postoperative outcomes. METHODS: The medical records of 242 patients and 484 eyes who underwent SMILE surgery were retrospectively reviewed. Preoperative intraocular pressure, refractive error, and corneal thickness were investigated. Refractive values and visual acuity were measured at 1d, 1, 3, and 6mo. Ocular cyclotorsion in the supine position was measured by calculating the location and angle of the incision site of the cornea in the anterior slit photograph taken after surgery. RESULTS: Of the total 484 eyes in 242 patients, preoperative mean spherical equivalent (SE) was -4.10±1.64 D, and the mean astigmatism was -0.82±0.74 D. Uncorrected distance visual acuity (UCVA) and SE improved significantly after the surgery. Moreover, 219 (45.2%) eyes had excyclotorsion, 235 (48.6%) eyes had incyclotorsion, and 30 (6.2%) eyes had no torsion. The right eyes tended to be excyclotorted, and the left eyes tended to be incyclotorted (P<0.01). The mean cyclotorsion was 1.18°±3.69°, and the mean absolute value of cyclotorsion was 3.14°±2.26°. The range of cyclotorsion was 0.5°–11.4°. It was found that the smaller the preoperative sphere, the higher the amount of cyclotorsion (r=0.11, P=0.016). There was no significant association between the amount of cyclotorsion and preoperative astigmatism. There was no correlation between sex, preoperative corneal thickness, preoperative intraocular pressure, amount of cyclotorsion, and direction of cyclotorsion. The ratio of right eye excyclotorsion and left eye incyclotorsion on 1d was higher than that at 1, 3, and 6mo (all P<0.01). There was no difference between the 1, 3, and 6mo results in the right and left eyes (P=0.15, P=0.16, respectively). CONCLUSION: The newly devised ocular cyclotorsion measurement method can be used to evaluate ocular cyclotorsion after SMILE. Preoperative SE is associated with the amount of cyclotorsion, however, cyclotorsion doesn't have a significant effect on the results of SMILE surgery.http://ies.ijo.cn/en_publish/2022/8/20220816.pdfanterior slit photographastigmatismcyclotorsionmyopiasmall incision lenticule extraction |
| spellingShingle | Jiho Song Hwanho Lee Moon Sun Jung Jae-hyung Kim Simple method of measuring ocular rotation in supine position during small incision lenticule extraction International Journal of Ophthalmology anterior slit photograph astigmatism cyclotorsion myopia small incision lenticule extraction |
| title | Simple method of measuring ocular rotation in supine position during small incision lenticule extraction |
| title_full | Simple method of measuring ocular rotation in supine position during small incision lenticule extraction |
| title_fullStr | Simple method of measuring ocular rotation in supine position during small incision lenticule extraction |
| title_full_unstemmed | Simple method of measuring ocular rotation in supine position during small incision lenticule extraction |
| title_short | Simple method of measuring ocular rotation in supine position during small incision lenticule extraction |
| title_sort | simple method of measuring ocular rotation in supine position during small incision lenticule extraction |
| topic | anterior slit photograph astigmatism cyclotorsion myopia small incision lenticule extraction |
| url | http://ies.ijo.cn/en_publish/2022/8/20220816.pdf |
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