scholarly journals Comparison of Visual, Refractive and Ocular Surface Outcomes Between Small Incision Lenticule Extraction and Laser-Assisted In Situ Keratomileusis for Myopia and Myopic Astigmatism

2019 ◽  
Vol 8 (3) ◽  
pp. 373-386 ◽  
Author(s):  
Yumi Tsz-Ying Lau ◽  
Kendrick Co Shih ◽  
Ryan Hin-Kai Tse ◽  
Tommy Chung-Yan Chan ◽  
Vishal Jhanji
Keyword(s):  
Ocular Surface ◽  
Small Incision Lenticule Extraction ◽  
Small Incision ◽  
Lenticule Extraction ◽  
Myopic Astigmatism

scholarly journals Two-year outcome of an eye that underwent hyperopic LASIK following inadvertent myopic SMILE lenticule in situ implantation

2019 ◽  
Author(s):  
Jing Zhao ◽  
Jianmin Shang ◽  
Lingling Niu ◽  
Haipeng Xu ◽  
Dong Yang ◽  
...  
Keyword(s):  
Medical Negligence ◽  
Small Incision Lenticule Extraction ◽  
Case Presentation ◽  
Future Studies ◽  
Small Incision ◽  
Corrected Distance Visual Acuity ◽  
Lenticule Extraction ◽  
Myopic Astigmatism ◽  
Corneal Tomography

Abstract Background: This report describes a case in which hyperopic femtosecond laser-assisted in situ keratomileusis (FS-LASIK) was performed following small incision lenticule extraction (SMILE) lenticule in situ implantation. Case presentation: The hyperopic left eye of a 46-year-old patient with refraction of +7.75 diopters sphere (DS)/-1.25 diopters cylinder (DC)  5° and corrected distance visual acuity (CDVA) of 20/50 mistakenly underwent the SMILE procedure for myopic astigmatism (-8.50 DS/-1.50 DC  175°) due to medical negligence. The extracted lenticule was subsequently re-implanted in situ. After 8 months, the left eye underwent FS-LASIK to correct hyperopia and astigmatism (+5.0 DS/-0.75 DC × 100°). Two years after FS-LASIK, corneal tomography showed no ectasia and microscopy revealed transparent cornea. The left eye exhibited CDVA of 20/50 with refraction of -0.75 DS/-0.25 DC × 165°. Conclusions: SMILE lenticule in situ implantation offers a solution for corneal volume and thickness restoration. FS-LASIK provides feasible correction of refractive error following lenticule re-implantation. Future studies are needed for determining the effectiveness of the treatment.

scholarly journals Comparison of clinical outcomes of implantable collamer lens versus femtosecondlaser in situ keratomileusis and small incision lenticule extraction for moderate-to-high myopia and myopic astigmatism correction

2021 ◽  
Vol 17 (4) ◽  
pp. 400-415
Author(s):  
Yen Hai Tran ◽  
Huy Dinh Minh Tran ◽  
Ly Thi-Hai Tran ◽  
Dung Thi Mong Nguyen ◽  
Chuong Nguyen Thao Le ◽  
...  
Keyword(s):  
High Myopia ◽  
Linear Models ◽  
Laser In Situ Keratomileusis ◽  
Small Incision Lenticule Extraction ◽  
Implantable Collamer Lens ◽  
Small Incision ◽  
Lenticule Extraction ◽  
Safety Indices ◽  
Myopic Astigmatism

Purpose: To compare safety, efficacy, stability, and predictability of implantable collamer lens (ICL) with femtosecond-laser in situ keratomileusis (FS-LASIK) or small incision lenticule extraction (SMILE) for the correction of moderate-to-high myopia/myopic astigmatism. Study design: We retrospectively collected data from patients with moderate-to-high myopia/myopic astigmatism (spherical equivalent [SE] ≥ −3.00 diopters [D]) who underwent ICL (48 eyes), FS-LASIK (36 eyes), or SMILE (86 eyes) at Hai Yen Eye Center from October 2016 to February 2018. Materials and methods: The Wilcoxon Mann-Whitney U test was used to compare pre- and postoperative patients’ characteristics of ICL with SMILE or FS-LASIK. Generalized linear models with unstructured correlation matrix and robust standard errors were used to analyze efficacy and safety indices; logistic regression was used for cylinder predictability. Results: After controlling for age, preoperative SE, and preoperative corrected distance visual acuity (pCDVA), SMILE had significantly lower safety indices (Coefficient = −0.04, 95% CI = −0.07–−0.01) and efficacy indices (Coefficient = −0.10, 95% CI = −0.20–−0.01) than did ICL, while FS-LASIK was not significantly different from ICL (Coefficient = −0.02, 95% CI = −0.06–0.02 and Coefficient = −0.01, 95% CI= −0.10–0.09, respectively). ICL SEswere stable over 12 months after surgery. However, in FS-LASIK and SMILE, SEs significantly decreased at 12 months compared with 6 months after surgery. The percentage of eyes that underwent FS-LASIK and had target SEs within ±0.5 D at 12 months was significantly lower than those that underwent ICL (OR = 0.14, 95% CI = 0.02–0.85), after controlling for age, preoperative SE, and pCDVA. Conclusion: For the correction of moderate-to-high myopia/myopic astigmatism, ICL seems to perform better than SMILE and FS-LASIK.

scholarly journals Three-year outcomes of small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) for myopia and myopic astigmatism

2018 ◽  
Vol 103 (4) ◽  
pp. 565-568 ◽  
Author(s):  
Tian Han ◽  
Ye Xu ◽  
Xiao Han ◽  
Li Zeng ◽  
Jianmin Shang ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Femtosecond Laser ◽  
Laser In Situ Keratomileusis ◽  
Small Incision Lenticule Extraction ◽  
Small Incision ◽  
Lenticule Extraction ◽  
Myopic Astigmatism

AimsTo compare long-term clinical outcomes following small incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK) for myopia and myopic astigmatism correction.MethodsIn this retrospective study, we enrolled a total of 101 patients (101 eyes) who underwent SMILE or FS-LASIK 3 years prior. Measured parameters included uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction and corneal wavefront aberrations.ResultsNo significant differences in patient characteristics were found between the two groups. At the 3-year follow-up, UDVA was better than or equal to 20/20 in 90% and 85% (p=0.540) of the eyes; the efficacy indexes were 1.05±0.19 and 1.01±0.21 in the SMILE and FS-LASIK groups, respectively (p=0.352). Safety indexes were 1.19±0.17 and 1.15±0.20 in the SMILE and FS-LASIK groups, respectively (p=0.307). Eighty per cent and 65% of eyes were within ±0.50 D of the attempted spherical equivalent correction after SMILE and FS-LASIK, respectively (p=0.164). Vector analysis revealed no significant differences in astigmatic correction between the two groups (p>0.05). Surgically induced spherical aberration was higher in the FS-LASIK group than in the SMILE group (p<0.001).ConclusionLong-term follow-up analysis suggested that both SMILE and FS-LASIK were safe and equally effective for myopic and astigmatic correction.

scholarly journals Two-year outcome of a patient after LASIK following SMILE lenticule in situ implantation to treat a rare complication

2019 ◽  
Author(s):  
Jing Zhao ◽  
Jianmin Shang ◽  
Lingling Niu ◽  
Haipeng Xu ◽  
Dong Yang ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Rare Complication ◽  
Small Incision Lenticule Extraction ◽  
Case Presentation ◽  
Small Incision ◽  
Corrected Distance Visual Acuity ◽  
Lenticule Extraction ◽  
Myopic Astigmatism ◽  
Corneal Tomography

Abstract Background: To report a case of femtosecond laser-assisted in situ keratomileusis (FS-LASIK) following small incision lenticule extraction (SMILE) lenticule in situ implantation to treat a rare complication. Case presentation: The hyperopic left eye of a 46-year-old patient with refraction of +7.75 diopters sphere (DS)/-1.25 diopters cylinder (DC)×5°and corrected distance visual acuity (CDVA) of 20/50 mistakenly underwent SMILE procedure for myopic astigmatism (-8.50DS/-1.50DC×175°) due to medical record error. The extracted lenticule was subsequently re-implanted in situ. After 8 months, the left eye underwent FS-LASIK to correct hyperopia and astigmatism （+5.0DS/-0.75DC×100°. Two years after FS-LASIK, corneal tomography showed no ectasia and microscopy revealed transparent cornea. The left eye obtained CDVA of 20/50 and the refraction was -0.75DS/-0.25DC×165°. Conclusion: SMILE lenticule in situ implantation offers a solution for rare complications and correction of refractive error following lenticule re-implantation with FS-LASIK is feasible and effective. Keywords: SMILE, Lenticule, Re-implantation, Complication

scholarly journals Two-year outcome of an eye that underwent hyperopic LASIK following inadvertent myopic SMILE lenticule in situ implantation

2019 ◽  
Author(s):  
Jing Zhao ◽  
Jianmin Shang ◽  
Lingling Niu ◽  
Haipeng Xu ◽  
Dong Yang ◽  
...  
Keyword(s):  
Medical Negligence ◽  
Small Incision Lenticule Extraction ◽  
Case Presentation ◽  
Small Incision ◽  
Corrected Distance Visual Acuity ◽  
Corneal Volume ◽  
Lenticule Extraction ◽  
Myopic Astigmatism ◽  
Corneal Tomography

Abstract Background: This report describes a case in which hyperopic femtosecond laser-assisted in situ keratomileusis (FS-LASIK) was performed following small incision lenticule extraction (SMILE) lenticule in situ implantation. Case presentation: The hyperopic left eye of a 46-year-old patient with refraction of +7.75 diopters sphere (DS)/-1.25 diopters cylinder (DC)  5° and corrected distance visual acuity (CDVA) of 20/50 mistakenly underwent the SMILE procedure for myopic astigmatism (-8.50 DS/-1.50 DC  175°) due to medical negligence. The extracted lenticule was subsequently re-implanted in situ. After 8 months, the left eye underwent FS-LASIK to correct hyperopia and astigmatism (+5.0 DS/-0.75 DC × 100°). Two years after FS-LASIK, corneal tomography showed no ectasia and microscopy revealed transparent cornea. The left eye exhibited CDVA of 20/50 with refraction of -0.75 DS/-0.25 DC × 165°. Conclusions: SMILE lenticule in situ implantation offers a solution for corneal volume and thickness restoration. In addition, FS-LASIK provides feasible and effective correction of refractive error following lenticule re-implantation.

scholarly journals SMILE and Wavefront-Guided LASIK Out-Compete Other Refractive Surgeries in Ameliorating the Induction of High-Order Aberrations in Anterior Corneal Surface

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Min-jie Ye ◽  
Cai-yuan Liu ◽  
Rong-feng Liao ◽  
Zheng-yu Gu ◽  
Bing-ying Zhao ◽  
...  
Keyword(s):  
Spherical Aberration ◽  
Laser In Situ Keratomileusis ◽  
Small Incision Lenticule Extraction ◽  
Corneal Surface ◽  
Small Incision ◽  
Significant Difference ◽  
Lenticule Extraction ◽  
A Prospective Study ◽  
High Order Aberrations

Purpose. To compare the change of anterior corneal higher-order aberrations (HOAs) after laser in situ keratomileusis (LASIK), wavefront-guided LASIK with iris registration (WF-LASIK), femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK), and small incision lenticule extraction (SMILE).Methods. In a prospective study, 82 eyes underwent LASIK, 119 eyes underwent WF-LASIK, 88 eyes underwent FS-LASIK, and 170 eyes underwent SMILE surgery. HOAs were measured with Pentacam device preoperatively and 6 months after surgery. The aberrations were described as Zernike polynomials, and analysis focused on total HOAs, spherical aberration (SA), horizontal coma, and vertical coma over 6 mm diameter central corneal zone.Results. Six months postoperatively, all procedures result in increase of anterior corneal total HOAs and SA. There were no significant differences in the induced HOAs between LASIK and FS-LASIK, while SMILE induced fewer total HOAs and SA compared with LASIK and FS-LASIK. Similarly, WF-LASIK also induced less total HOAs than LASIK and FS-LASIK, but only fewer SA than FS-LASIK (P<0.05). No significant difference could be detected in the induced total HOAs and SA between SMILE and WF-LASIK, whereas SMILE induced more horizontal coma and vertical coma compared with WF-LASIK (P<0.05).Conclusion. FS-LASIK and LASIK induced comparable anterior corneal HOAs. Compared to LASIK and FS-LASIK, both SMILE and WF-LASIK showed advantages in inducing less total HOAs. In addition, SMILE also possesses better ability to reduce the induction of SA in comparison with LASIK and FS-LASIK. However, SMILE induced more horizontal coma and vertical coma compared with WF-LASIK, indicating that the centration of SMILE procedure is probably less precise than WF-LASIK.

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