Features of Femtosecond Correction of High Myopia through Small Access
Aim. To modify the calculated parameters of the lenticle extraction refractive surgery through a small access (SMILE), evaluate its safety and clinical efficacy in correcting high myopia.Materials and methods. 34 patients (68 eyes) underwent surgery by a modified SMILE technology under local anesthe...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | Russian |
| Published: |
Scientific Сentre for Family Health and Human Reproduction Problems
2019-08-01
|
| Series: | Acta Biomedica Scientifica |
| Subjects: | |
| Online Access: | https://www.actabiomedica.ru/jour/article/view/2129 |
| _version_ | 1797237285811388416 |
|---|---|
| author | O. V. Pisarevskaya A. G. Shchuko T. N. Iureva E. M. Balgirova T. N. Frolova L. S. Khlebnikova |
| author_facet | O. V. Pisarevskaya A. G. Shchuko T. N. Iureva E. M. Balgirova T. N. Frolova L. S. Khlebnikova |
| author_sort | O. V. Pisarevskaya |
| collection | DOAJ |
| description | Aim. To modify the calculated parameters of the lenticle extraction refractive surgery through a small access (SMILE), evaluate its safety and clinical efficacy in correcting high myopia.Materials and methods. 34 patients (68 eyes) underwent surgery by a modified SMILE technology under local anesthesia. In all cases, the patients had a high degree of myopia, in 37 % in combination with astigmatism.Uncorrected visual acuity before surgery averaged 0.05 ± 0.11, best corrected visual acuity of 0.94 ± 0.1, the pre-operative spherical refraction component was –7.23 ± 0.75, the cylindrical component was –0.48 ± 0.59.During the operation, to obtain the maximum possible refraction result using the proposed method, the standard operation parameters were changed: the corneal flap thickness was reduced to 100 μm, the neural optical layer by 5 μm, the diameter of the optical zone depended on the residual cornea thickness, which should exceed 280–290 μm. Corneal access was increased by 15–20 degrees.Results. The next day after surgery, monocular uncorrected visual acuity in distance in 73 % of patients was 0.8 or higher, and in 41 % of cases it was equal to or exceeded 1.0. The spherical equivalent on the first day after surgery had a slight hypermetropic shift, which was completely leveled by the year of follow-up. During the surgical intervention and in the postoperative period, no complications were noted.Conclusion. Using the proposed algorithm for calculating the refractive effect of the operation SMILE with a high degree of myopia allows obtaining a high refractive effect and avoiding possible complications. |
| first_indexed | 2024-03-08T12:17:12Z |
| format | Article |
| id | doaj.art-9b1b5603b3d94dfa9ae69e77677a0310 |
| institution | Directory Open Access Journal |
| issn | 2541-9420 2587-9596 |
| language | Russian |
| last_indexed | 2024-04-24T17:17:19Z |
| publishDate | 2019-08-01 |
| publisher | Scientific Сentre for Family Health and Human Reproduction Problems |
| record_format | Article |
| series | Acta Biomedica Scientifica |
| spelling | doaj.art-9b1b5603b3d94dfa9ae69e77677a03102024-03-28T07:49:22ZrusScientific Сentre for Family Health and Human Reproduction ProblemsActa Biomedica Scientifica2541-94202587-95962019-08-014410210710.29413/ABS.2019-4.4.151910Features of Femtosecond Correction of High Myopia through Small AccessO. V. Pisarevskaya0A. G. Shchuko1T. N. Iureva2E. M. Balgirova3T. N. Frolova4L. S. Khlebnikova5Irkutsk Branch of S. Fyodorov Eye Microsurgery Federal State InstitutionIrkutsk Branch of S. Fyodorov Eye Microsurgery Federal State Institution; Irkutsk State Medical Academy of Postgraduate Education – Branch Campus of the Russian Medical Academy of Continuing Professional Education; Irkutsk State Medical University Russian FederationIrkutsk Branch of S. Fyodorov Eye Microsurgery Federal State Institution; Irkutsk State Medical Academy of Postgraduate Education – Branch Campus of the Russian Medical Academy of Continuing Professional Education; Irkutsk State Medical University Russian FederationIrkutsk Branch of S. Fyodorov Eye Microsurgery Federal State Institution; Irkutsk State Medical UniversityIrkutsk Branch of S. Fyodorov Eye Microsurgery Federal State InstitutionIrkutsk Branch of S. Fyodorov Eye Microsurgery Federal State InstitutionAim. To modify the calculated parameters of the lenticle extraction refractive surgery through a small access (SMILE), evaluate its safety and clinical efficacy in correcting high myopia.Materials and methods. 34 patients (68 eyes) underwent surgery by a modified SMILE technology under local anesthesia. In all cases, the patients had a high degree of myopia, in 37 % in combination with astigmatism.Uncorrected visual acuity before surgery averaged 0.05 ± 0.11, best corrected visual acuity of 0.94 ± 0.1, the pre-operative spherical refraction component was –7.23 ± 0.75, the cylindrical component was –0.48 ± 0.59.During the operation, to obtain the maximum possible refraction result using the proposed method, the standard operation parameters were changed: the corneal flap thickness was reduced to 100 μm, the neural optical layer by 5 μm, the diameter of the optical zone depended on the residual cornea thickness, which should exceed 280–290 μm. Corneal access was increased by 15–20 degrees.Results. The next day after surgery, monocular uncorrected visual acuity in distance in 73 % of patients was 0.8 or higher, and in 41 % of cases it was equal to or exceeded 1.0. The spherical equivalent on the first day after surgery had a slight hypermetropic shift, which was completely leveled by the year of follow-up. During the surgical intervention and in the postoperative period, no complications were noted.Conclusion. Using the proposed algorithm for calculating the refractive effect of the operation SMILE with a high degree of myopia allows obtaining a high refractive effect and avoiding possible complications.https://www.actabiomedica.ru/jour/article/view/2129femtosecond surgerysmilehigh myopia |
| spellingShingle | O. V. Pisarevskaya A. G. Shchuko T. N. Iureva E. M. Balgirova T. N. Frolova L. S. Khlebnikova Features of Femtosecond Correction of High Myopia through Small Access Acta Biomedica Scientifica femtosecond surgery smile high myopia |
| title | Features of Femtosecond Correction of High Myopia through Small Access |
| title_full | Features of Femtosecond Correction of High Myopia through Small Access |
| title_fullStr | Features of Femtosecond Correction of High Myopia through Small Access |
| title_full_unstemmed | Features of Femtosecond Correction of High Myopia through Small Access |
| title_short | Features of Femtosecond Correction of High Myopia through Small Access |
| title_sort | features of femtosecond correction of high myopia through small access |
| topic | femtosecond surgery smile high myopia |
| url | https://www.actabiomedica.ru/jour/article/view/2129 |
| work_keys_str_mv | AT ovpisarevskaya featuresoffemtosecondcorrectionofhighmyopiathroughsmallaccess AT agshchuko featuresoffemtosecondcorrectionofhighmyopiathroughsmallaccess AT tniureva featuresoffemtosecondcorrectionofhighmyopiathroughsmallaccess AT embalgirova featuresoffemtosecondcorrectionofhighmyopiathroughsmallaccess AT tnfrolova featuresoffemtosecondcorrectionofhighmyopiathroughsmallaccess AT lskhlebnikova featuresoffemtosecondcorrectionofhighmyopiathroughsmallaccess |