Management of Laser Settings for Better SMILE Surgery

Meyer, Bertram; Wiltfang, Rainer

doi:10.1007/978-3-319-18530-9_11

Cited by 2 publications

(2 citation statements)

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“…However, several improvements, including changing the direction of the scan pattern of the femtosecond laser, 20 raising the laser frequency from 200 to 500 kHz, optimizing the track and spot spacing of the laser, 21 and reducing the laser energy, all led to an improvement of the procedure. This led to the release of the laser for widespread use of the procedure in 2011.…”

Section: Historymentioning

confidence: 99%

History and Results; Indications and Contraindications of SMILE, Compared With LASIK

Shah

2019

Asia-Pacific Journal of Ophthalmology

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Small incision lenticule extraction (SMILE) is a new paradigm for refractive surgery, and was first performed by Sekundo and Blum in 2008. It uses only a femtosecond laser to carve out a lenticule within the corneal stroma, and then achieves refractive correction by extracting the lenticule through a small incision. A number of studies have shown that SMILE leads to stable and efficacious outcomes, combined with high safety. Long-term studies also indicate that SMILE has excellent outcomes combined with high safety. Although relatively safe, SMILE can have some intraoperative and postoperative complications, including suction loss during the procedure, lenticule tears, incision tears, epithelial ingrowth, diffuse lamellar keratitis, and residual refractive error. Studies indicate that SMILE leads to less postoperative dry eyes. It is thus preferred over laser-assisted in-situ keratomileusis (LASIK) in cases wherein there is mild dry eye preoperatively. It is also preferred over LASIK in cases wherein the patient is likely to engage in contact sports. LASIK may be preferred over SMILE for the treatment of hyperopia, and in cases of significant higher order wavefront aberrations or topographic irregularities.

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Section: Historymentioning

confidence: 99%

History and Results; Indications and Contraindications of SMILE, Compared With LASIK

Shah

2019

Asia-Pacific Journal of Ophthalmology

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“…Seit der Einführung der größeren Spot-Abstände gab es an unserem Zentrum keinen einzigen Ansaugverlust ("Suction Loss"). Meyer und Wiltfang untersuchten in einer Serie an Ex-vivo-Schweineaugen wie bei normalen Operationen am Menschen unterschiedliche Energien und Schussabstände und kamen zu dem Schluss, dass für die Schnittqualität die Energie pro Fläche entscheidender ist als die Höhe eines individuellen Laserschusses [12]. Die Kehrseite besteht möglicherweise in stärkeren Gewebebrücken und dadurch einer stärkeren Verformung des Laserbetts durch die sukzessive manuelle Dissektion.…”

Section: Diskussionunclassified

Drei Jahre Nachbeobachtung nach refraktiver Small Incision Lenticule Extraction (SMILE) mit einem 500-kHz-Femtosekundenlaser im „Fast Mode“

Messerschmidt-Roth

Sekundo

Lazaridis

et al. 2016

Klin Monatsbl Augenheilkd

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The aim of this clinical trial was to check the results of laser built-in settings 3 years after ReLEx SMILE for moderate and high myopia in unselected "real life" patients. 50 myopic eyes of 27 patients were called in for examination after 3 years. 25 of these eyes with a preoperative myopia under - 6D comprised the "moderate myopia subgroup". All surgeries were performed with the 500 kHz VisuMax® femtosecond laser (Carl Zeiss Meditec AG, Jena) in the "fast mode" setting. The spherical equivalent (SE) of the entire group changed from - 6.18 D (± 1.91) prior to surgery to - 0.18 D (± 0.39) 3 years later. The preoperative SE in the moderate myopia subgroup changed from - 4.71 D (± 0.94) to - 0.04 D (± 0.23). 14 % of 50 eyes gained one line and 22 % lost one line of CDVA. The regression between month 3 and 36 was 0.07D for the entire group and 0.06 D for the moderate myopia subgroup. There were no late side effects. Primary undercorrection was predominantly seen in eyes over - 6 D. ReLEx SMILE shows remarkable stability over the entire range of myopias after 3 years, however primary undercorrection occurs predominantly in eyes of - 6.0 D, which necessitates nomogram adjustment.

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Management of Laser Settings for Better SMILE Surgery

Cited by 2 publications

References 1 publication

History and Results; Indications and Contraindications of SMILE, Compared With LASIK

History and Results; Indications and Contraindications of SMILE, Compared With LASIK

Drei Jahre Nachbeobachtung nach refraktiver Small Incision Lenticule Extraction (SMILE) mit einem 500-kHz-Femtosekundenlaser im „Fast Mode“

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