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- Title
Early visual outcomes and optical quality after femtosecond laser small‐incision lenticule extraction for myopia and myopic astigmatism correction of over −10 dioptres.
- Authors
Qin, Bing; Li, Meiyan; Chen, Xun; Zhou, Xingtao; Sekundo, Walter
- Abstract
Abstract: Purpose: To investigate early visual and refractive outcomes, corneal stability and optical quality after femtosecond laser small‐incision lenticule extraction (SMILE) for treating myopia and myopic astigmatism over −10 D. Methods: Thirty eyes (30 patients) with myopia and myopic astigmatism of over −10 D were treated with VisuMax® femtosecond laser (version 3.0; Carl Zeiss Meditec AG, Jena, Germany). Six months postoperative safety, efficacy and predictability were evaluated. Corneal Scheimpflug topography was measured preoperatively, 1 day, 3 months and 6 months postoperatively. Wavefront aberrations were measured preoperatively, 3 months and 6 months postoperatively. Results: Six months postoperatively, LogMAR uncorrected and corrected distance visual acuity (CDVA) were −0.013 ± 0.086 and −0.073 ± 0.069, respectively. 73% (97%) of eyes were within 0.5 (1) D of target refraction. No eyes lost CDVA, 43% (13 eyes) gained one line and 7% (two eyes) gained two lines. Mean corneal back curvature (KMB) and posterior central elevation (PCE) did not change significantly comparing preoperative and 6 months postoperative data (p = 0.91 and 0.77, respectively). Comparing 1 day with 6 months postoperative data, central corneal thickness (CCT), mean corneal front curvature (KMF), KMB and PCE did not change significantly (p = 0.27, 0.07, 0.52, 0.71, respectively). Total higher‐order aberration (HOA), spherical aberration and coma increased significantly (p < 0.01) but trefoil remained stable (p = 0.49). Conclusion: Our results indicate that SMILE can correct myopia and myopic astigmatism of over −10 D predictably. No early ectasia was observed. Long‐term changes in visual quality and corneal stability require further investigation.
- Subjects
FEMTOSECOND lasers; TREATMENT of eye refractive errors; MYOPIA; ASTIGMATISM (Optics); VISUAL acuity
- Publication
Acta Ophthalmologica (1755375X), 2018, Vol 96, Issue 3, pe341
- ISSN
1755-375X
- Publication type
Article
- DOI
10.1111/aos.13609