Academic Journal
Comparative study of small incision refractive lenticule extraction with 5 mm versus 6.5 mm optic zone for myopia
| العنوان: | Comparative study of small incision refractive lenticule extraction with 5 mm versus 6.5 mm optic zone for myopia |
|---|---|
| المؤلفون: | Jeevan S Ladi, Anita Gaikwad, Nitant A Shah |
| المصدر: | Indian Journal of Ophthalmology, Vol 71, Iss 7, Pp 2717-2721 (2023) |
| بيانات النشر: | Wolters Kluwer Medknow Publications, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Ophthalmology |
| مصطلحات موضوعية: | 5 mm optic zone, myopia, relex-smile, residual stromal thickness, Ophthalmology, RE1-994 |
| الوصف: | Purpose: To compare residual stromal thickness (RST) in eyes undergoing small incision refractive lenticule extraction (SMILE) using a lenticular diameter of 6.5 mm versus those with a diameter of 5 mm. Methods: In this retrospective comparative case series, consecutive patients who underwent SMILE between 2016 and 2021 with at least 6 months of follow-up were included. Preoperative best-corrected distance visual acuity (BCDVA), refractive error, contrast sensitivity, central corneal thickness, keratometry, higher order aberrations, and scotopic pupil size were recorded using a Placido disk topography with Sheimpflug tomography-based system. Patients underwent SMILE with a lenticular diameter of 6.5 mm until 2018 (n = 372 eyes). Thereafter, the lenticular diameter was reduced to 5 mm (n = 318). The RST, postoperative refraction, aberrations, subjective glare, and halos were compared across groups at 1 and 6 months. Results: The mean age of participants was 26.8 ± 5.8 years with a mean preoperative spherical equivalent of −4.48 D ± 2.16 D (range: −0.75 to −12.25 D) and mean scotopic pupil of 3.7 ± 0.75 mm. Eyes in the 5 mm group had 30.6 m (95% confidence interval [CI] = 28 to 33 m, P < 0.001) greater RST compared to the 6.5 mm group after adjusting for spherical equivalent and preoperative pachymetry. There were no differences in vision, contrast sensitivity, aberrations (wavefront error of 0.19 ± 0.2 vs. 0.25 ± 0.2, P = 0.19) or glare between the two groups. Conclusion: SMILE performed with a lenticular diameter of 5 mm leads to greater RST across the myopic range, but without inducing significant higher-order aberrations. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 0301-4738 1998-3689 |
| Relation: | http://www.ijo.in/article.asp?issn=0301-4738;year=2023;volume=71;issue=7;spage=2717;epage=2721;aulast=Ladi; https://doaj.org/toc/0301-4738; https://doaj.org/toc/1998-3689 |
| DOI: | 10.4103/IJO.IJO_2559_22 |
| URL الوصول: | https://doaj.org/article/0c711f0efb3e4b89bee8670df8b8a119 |
| رقم الانضمام: | edsdoj.0c711f0efb3e4b89bee8670df8b8a119 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 03014738 19983689 |
|---|---|
| DOI: | 10.4103/IJO.IJO_2559_22 |