RT Journal Article T1 Ocular residual astigmatism’s effect on high myopic astigmatism LASIK surgery A1 Teus, Miguel Ángel A1 Arruabarrena, Carolina A1 Hernández Verdejo, José Luis A1 Cañones Zafra, Rafael A1 Mikropoulos, Dimitrios G. AB Purpose: To analyze the effect of ocular residual astigmatism (ORA) on the effectiveness of LASIK for treating high myopic astigmatism.Methods: This is an observational, cross-sectional study. We studied 116 consecutive myopic eyes with −3 diopters (D) or more of astigmatism that underwent LASIK surgery. The magnitude of uncorrected residual refractive astigmatism 3 months postoperatively was measured.Results: The mean preoperative cylinder was −4.0±0.83 D (range, −7.5 to −3 D) and the mean preoperative ORA was 0.82±0.5 D. The mean residual refractive cylinder 3 months postoperatively was −0.78±0.83 D (range, −3 to 0 D). No correlation was found between ORA and the refractive cylinder 3 months postoperatively (P=0.6).Conclusion: In eyes with high myopic astigmatism undergoing LASIK, ORA was not correlated with the residual postoperative cylinder. PB Nature Publishing Group SN 0950-222X YR 2014 FD 2014-08 LK https://hdl.handle.net/20.500.14352/35426 UL https://hdl.handle.net/20.500.14352/35426 LA eng NO En O.A. en PubMed Central.© 2014 Royal College of Ophthalmologists.The results of this article were presented in part in the XXX Congress of the ESCRS in Milano (Italy), September 2012.Received: 13 January 2014; Accepted in Revised form: 27 April 2014; Advance online publication 27 June 2014. DS Docta Complutense RD 9 abr 2025