SMILE Surgery Research Articles

МОДИФИКАЦИЯ ТЕХНОЛОГИИ SMILE В КОРРЕКЦИИ АМЕТРОПИЙ

Purpose: To evaluate the clinical efficacy and safety of modified SMILE surgery for mild myopia. Methods: The study involved 68patients (135eyes), operated by SMILE methods for mild myopia. The first group included patients operated by standard technology with a 15μm thickness of neural optical lenticular layer, the second group – patients, operated by a modified SMILE technology monolayer with thickness of 30μm. A comprehensive ophthalmology examination was performed before the surgery and after the surgical treatment – on the following day, in one month and in 12 months. Results: In all patients of both groups the monocular uncorrected visual acuity after the operation after the period of one day, one month, and a year did not differ and made 0.88±0.15, 0.92±0.1 and 0.95±0.08 respectively, for the second group – 0.87±0.18, 0.92±0.15 and 0.96±0.10 (p≥0.05). Follow-up in the early and late postoperative period convincingly demonstrated that visual acuity, refraction, spatial sensitivity, corneal hysteresis indices and even a subjective assessment of visual quality have no statistically significant differences among patients in both groups. During the operation and late postoperative period the complications were not noted. Conclusion: the study found that the modified technology provides high visual acuity, while minimally changing the biomechanical properties of the cornea. Thus, a modified SMILE operation is highly predictable and safe method in correction of slight degree myopia

Vector analysis and comprison of small incision lenticule extraction versus laser in-situ keratomileusis for low to moderate myopic astigmatism

Background Small incision lenticule extraction (SMILE) is lack of eye-tracking system and there is controversy in the treatment of astigmatism.It is very important to understand its correction effctiveness for myopic astigmatism. Objective This study was to evaluate the clinical outcomes in the correction of myopic astigmatism between SMILE and femtosecond laser assisted laser in situ keratomileusis (FS-LASIK). Methods In this retrospective study, 95 eyes of 51 patients and 69 eyes of 40 patients with myopic astigmatism underwent the SMILE surgery and FS-LASIK surgery respectively in Tianjin Eye Hospital from December 2013 to July 2014 under the informed consent.No significant differences were found in spherical power, astigmatic power and spherical equivalent (SE) between the SMILE group and FS-LASIK group before surgery (all at P>0.05). The uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), manifest refraction, slit-lamp microscopy, intraocular pressure and corneal topography were measured before surgery and 1 day, 1 week, 1 month, 3 months after surgery.Vector analysis was used to calculate the components of astigmatism before and after surgery.Correction index (CI), index of success (IOS), angle of error (AofE) and flattening index (FI) were used to evaluate the correction effectiveness of astigmatism.Safety index and efficacy index were used to evaluate the recovery status of visual acuity.The corrected effectiveness was compared between the two groups, and the correlations of kappa angle with measured parameter were assessed by Spearman rank correlation analysis. Results The mean spherical power, astigmatic power and SE were (0.003±0.106), (-0.063 ± 0.126) and (-0.029 ± 0.101)D in the SMILE group, which were significantly lower than (0.112 ± 0.212), (-0.091 ± 0.142) and (0.067 ± 0.198)D in the FS-LASIK group (Z=-4.328, -3.197, both at P 0.05). Negative correlations were found between safety index or efficacy index and preoperative kappa angle in the SMILE group (r=-0.258, -0.257, both at P<0.05). Conclusions Both SMILE and FS-LASIK surgeries are effective and safe in correcting myopic astigmatism with good postoperative visual acuity.SMILE surgery shows less axis rotation and higher accuracy than FS-LASIK because of small incision and flapless procedure.The correction of cylinder can adjust based on experience of surgeon. Key words: Cornea/surgery; Femtosecond laser; Myopia; Astigmatism; Vector analysis; Small incision lenticule extraction

Comparison of the Optical Quality between Small Incision Lenticule Extraction and Femtosecond Laser LASIK.

Purpose. To investigate the visual quality after SMILE and Femto-LASIK. Methods. About 123 eyes from 63 patients were enrolled in this study. The parameters were measured preoperatively and 1 week, 1 month, and 3 months postoperatively using Sirius System. Results. The MTF curve increase slightly from low to high frequency at 3 mm and 6 mm pupil diameter after SMILE surgery (P < 0.05) during the follow-up time comparing with the preoperative values. And the SR has a significant increase at various pupil diameters as well (P < 0.05). However, there was little increase for MTF at intermediate to high frequency at 3 mm pupil diameter after Femto-LASIK procedure (P < 0.05). And the SR had only significant increase at 3 mm pupil diameter. Between SMILE and Femto-LASIK, there was no statistic difference both in MTF and SR (P > 0.05) at 3 mm pupil diameter at vertical and horizontal meridian. However, significant difference was found in MTF at low to mediate frequency at 6 mm pupil diameter at vertical meridian at 1 week postoperatively (P < 0.05). Conclusions. Both SMILE and Femto-LASIK show a great improvement in optical quality at small diameter. It was found that SMILE shows better optical quality than Femto-LASIK at larger pupil diameter, which might be good for the night vision.

Causal Attributions of Cleft Lip and Palate across Cultures

Objective : To describe and compare the causal beliefs associated with cleft lips and/or palates across several different countries. Design : Cross-sectional survey. Setting : Operation Smile surgery screenings in six developing countries. Participants : Two hundred seventy-nine adult patients and parents of children with cleft lips and/or palates in Kenya, Russia, Cambodia, India, Egypt, and Peru. Interventions : In person interviews were conducted with interpreters. Main Outcome Measure : As part of a larger study, a semistructured questionnaire was created to explore cleft perceptions, belief systems that affect these perceptions, and social reactions to individuals with clefts. Results : Causal attributions were grouped by category (environment, self-blame, supernatural, chance, unknown, or other) and type of locus of control (external, internal, or unknown). Results indicate significant difference by country for both causal attribution category (P < .001) and type (P < .001). This difference was maintained in multivariate analyses, which controlled for differences by demographic variables between countries. Conclusions : This study provides evidence that causal attributions for clefts are influenced by culture. As harmful beliefs about cause may continue to impact affected individuals and their families even after a repair, it is insufficient to provide surgical care alone. Care of the entire person must include attempts to change misinformed cultural beliefs through educating the broader community.

Assessing Outcomes in Facial Reanimation: Evaluation and Validation of the SMILE System for Measuring Lip Excursion During Smiling

Assessing Outcomes in Facial Reanimation: Evaluation and Validation of the SMILE System for Measuring Lip Excursion During Smiling

Plastic surgery: Practical suggestions on facial plastic surgery: Smile surgery

The LaryngoscopeVolume 89, Issue 9 p. 1528-1533 Article Plastic surgery: Practical suggestions on facial plastic surgery: Smile surgery† Frank M. Kamer M.D., Corresponding Author Frank M. Kamer M.D. Los Angeles, Calif.9201 sunset Bivd., 405 Los AngelesSearch for more papers by this author Frank M. Kamer M.D., Corresponding Author Frank M. Kamer M.D. Los Angeles, Calif.9201 sunset Bivd., 405 Los AngelesSearch for more papers by this author First published: September 1979 https://doi.org/10.1002/lary.5540890917Citations: 9 † From the Department of Surgery, Division of Head and Neck Surgery, University of California, Los Angeles, Calif. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume89, Issue9September 1979Pages 1528-1533 RelatedInformation