NDLI: Comparison of Astigmatic Correction after Femtosecond Lenticule Extraction and Small-Incision Lenticule Extraction for Myopic Astigmatism

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Comparison of Astigmatic Correction after Femtosecond Lenticule Extraction and Small-Incision Lenticule Extraction for Myopic Astigmatism

Content Provider	Semantic Scholar
Author	Kobashi, Hidenaga Kamiya, Kazutaka Ali, Mohamed A. Igarashi, Akihito Elewa, Mohamed Ehab M. Shimizu, Kimiya
Copyright Year	2015
Abstract	PURPOSE To compare postoperative astigmatic correction between femtosecond lenticule extraction (FLEx) and small-incision lenticule extraction (SMILE) in eyes with myopic astigmatism. METHODS We examined 26 eyes of 26 patients undergoing FLEx and 26 eyes of 26 patients undergoing SMILE to correct myopic astigmatism (manifest astigmatism of 1 diopter (D) or more). Visual acuity, cylindrical refraction, the predictability of the astigmatic correction, and the astigmatic vector components using Alpin's method, were compared between the two groups 3 months postoperatively. RESULTS We found no statistically significant difference in manifest cylindrical refraction (p=0.74) or in the percentage of eyes within ± 0.50 D of their refraction (p=0.47) after the two surgical procedures. Moreover, no statistically significant difference was detected between the groups in astigmatic vector components, namely, surgically induced astigmatism (0.80), target induced astigmatism (p=0.87), astigmatic correction index (p=0.77), angle of error (p=0.24), difference vector (p=0.76), index of success (p=0.91), flattening effect (p=0.79), and flattening index (p=0.84). CONCLUSIONS Both FLEx and SMILE procedures are essentially equivalent in correcting myopic astigmatism using vector analysis, suggesting that the lifting or non-lifting of the flap does not significantly affect astigmatic outcomes after these surgical procedures.
File Format	PDF HTM / HTML
DOI	10.1371/journal.pone.0123408
PubMed reference number	25849381
Journal	Medline
Volume Number	10
Alternate Webpage(s)	http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0123408&type=printable
Alternate Webpage(s)	https://doi.org/10.1371/journal.pone.0123408
Journal	PloS one
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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