{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,13]],"date-time":"2026-08-13T19:36:33Z","timestamp":1786649793408,"version":"build-2736575974"},"reference-count":32,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"5","license":[{"start":{"date-parts":[[2023,5,1]],"date-time":"2023-05-01T00:00:00Z","timestamp":1682899200000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-sa\/4.0"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2023,5]]},"abstract":"\n Purpose:<\/jats:title>\n To evaluate the postoperative visual outcomes, that is, corneal higher-order aberrations (HOAs) and visual quality, of patients with an angle kappa greater than 0.30 mm who underwent angle kappa adjustment during small-incision lenticule extraction (SMILE) 2 years after surgery compared to eyes with an angle kappa less than 0.30 mm.<\/jats:p>\n <\/jats:sec>\n \n Methods:<\/jats:title>\n \n This was a retrospective study and included 12 patients from October 2019 to December 2019 who underwent the SMILE procedure for correction of myopia and myopic astigmatism and had one eye with a large kappa angle and another eye with a small kappa angle. Twenty-four months after surgery, an optical quality analysis system (OQAS II; Visiometrics, Terrassa, Spain) was used to measure the modulation transfer function cutoff frequency (MTF\n cutoff<\/jats:sub>\n ), Strehl2D ratio, and objective scatter index (OSI). HOAs were measured with a Tracey iTrace Visual Function Analyzer (Tracey version 6.1.0; Tracey Technologies, Houston, TX, USA). Assessment of subjective visual quality was achieved using the quality of vision (QOV) questionnaire.\n <\/jats:p>\n <\/jats:sec>\n \n Results:<\/jats:title>\n \n At 24 months postoperatively, the mean spherical equivalent (SE) refraction was \u2212 0.32 \u00b1 0.40 and \u2212 0.31 \u00b1 0.35 in the S-kappa group (kappa <0.3 mm) and the L-kappa group (kappa \u22650.3 mm), respectively (\n P ><\/jats:italic>\n 0.05). The mean OSI was 0.73 \u00b1 0.32 and 0.81 \u00b1 0.47, respectively (\n P ><\/jats:italic>\n 0.05). There was no significant difference in MTF\n cutoff<\/jats:sub>\n and Strehl2D ratio between the two groups (\n P ><\/jats:italic>\n 0.05). Total HOA, coma, spherical, trefoil, and secondary astigmatism were not significantly different (\n P ><\/jats:italic>\n 0.05) between the two groups.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusion:<\/jats:title>\n Adjustment of angle kappa during SMILE helps reduce the decentration, results in less HOAs, and promotes visual quality. It provides a reliable method to optimize the treatment concentration in SMILE.<\/jats:p>\n <\/jats:sec>","DOI":"10.4103\/ijo.ijo_3017_22","type":"journal-article","created":{"date-parts":[[2023,5,17]],"date-time":"2023-05-17T03:35:48Z","timestamp":1684294548000},"page":"1849-1854","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":7,"title":["Higher-order aberrations and visual quality after incision lenticule extraction surgery with intraoperative angle kappa adjustments between small and large kappa patients: A 2-year follow-up"],"prefix":"10.4103","volume":"71","author":[{"given":"Mengzhen","family":"Xie","sequence":"first","affiliation":[{"name":"Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan, China"},{"name":"West China School of Medicine, Sichuan University, Chengdu, Sichuan, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yingping","family":"Deng","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chengshu","family":"Sun","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lemei","family":"Qiu","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Tang","sequence":"additional","affiliation":[{"name":"Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2023,5,17]]},"reference":[{"key":"R1-20251006","doi-asserted-by":"crossref","first-page":"256","DOI":"10.3928\/1081597X-20151111-06","article-title":"Clinical outcomes of SMILE and FS-LASIK used to treat Myopia:A meta-analysis","volume":"32","author":"Zhang","year":"2016","journal-title":"J Refract Surg"},{"key":"R2-20251006","doi-asserted-by":"crossref","first-page":"724","DOI":"10.1016\/j.ophtha.2019.09.006","article-title":"Randomized clinical trial comparing femtosecond LASIK and Small-Incision lenticule extraction","volume":"127","author":"Ang","year":"2020","journal-title":"Ophthalmology"},{"key":"R3-20251006","doi-asserted-by":"crossref","first-page":"262","DOI":"10.3928\/1081597X-20220314-01","article-title":"Small incision lenticule extraction (SMILE) for the correction of high myopia with Astigmatism","volume":"38","author":"Reinstein","year":"2022","journal-title":"J Refract Surg"},{"key":"R4-20251006","doi-asserted-by":"crossref","first-page":"269","DOI":"10.1097\/ICU.0b013e3283543c41","article-title":"Measurement of angle kappa and centration in refractive surgery","volume":"23","author":"Park","year":"2012","journal-title":"Curr Opin Ophthalmol"},{"key":"R5-20251006","doi-asserted-by":"crossref","first-page":"680","DOI":"10.3928\/1081597X-20140903-04","article-title":"Topographic analysis of the centration of the treatment zone after SMILE for myopia and comparison to FS-LASIK:Subjective versus objective alignment","volume":"30","author":"Lazaridis","year":"2014","journal-title":"J Refract Surg"},{"key":"R6-20251006","doi-asserted-by":"crossref","first-page":"863","DOI":"10.1016\/j.ajo.2014.06.028","article-title":"The subject-fixated coaxially sighted corneal light reflex:A clinical marker for centration of refractive treatments and devices","volume":"158","author":"Chang","year":"2014","journal-title":"Am J Ophthalmol"},{"key":"R7-20251006","doi-asserted-by":"crossref","first-page":"1739","DOI":"10.1016\/j.jcrs.2011.07.016","article-title":"Role of angle kappa in patient dissatisfaction with refractive-design multifocal intraocular lenses","volume":"37","author":"Prakash","year":"2011","journal-title":"J Cataract Refract Surg"},{"key":"R8-20251006","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1016\/j.jcrs.2018.08.026","article-title":"Optical and visual quality after small-incision lenticule extraction","volume":"45","author":"Gyldenkerne","year":"2019","journal-title":"J Cataract Refract Surg"},{"key":"R9-20251006","doi-asserted-by":"crossref","first-page":"609","DOI":"10.1097\/ICO.0000000000002274","article-title":"The effect of intraoperative angle kappa adjustment on higher-order aberrations before and after small incision lenticule extraction","volume":"39","author":"Shao","year":"2020","journal-title":"Cornea"},{"key":"R10-20251006","doi-asserted-by":"crossref","first-page":"e6076","DOI":"10.1097\/MD.0000000000006076","article-title":"Intraoperative centration during small incision lenticule extraction (SMILE)","volume":"96","author":"Wong","year":"2017","journal-title":"Medicine (Baltimore)"},{"key":"R11-20251006","doi-asserted-by":"crossref","first-page":"4","DOI":"10.1186\/s40662-015-0014-6","article-title":"Centration axis in refractive surgery","volume":"2","author":"Arba Mosquera","year":"2015","journal-title":"Eye Vis (Lond)"},{"key":"R12-20251006","doi-asserted-by":"crossref","first-page":"B103","DOI":"10.1364\/JOSAA.36.00B103","article-title":"Optical quality comparison between laser ablated myopic eyes with centration on coaxially sighted corneal light reflex and on entrance pupil center","volume":"36","author":"Liu","year":"2019","journal-title":"J Opt Soc Am A Opt Image Sci Vis"},{"key":"R13-20251006","doi-asserted-by":"crossref","first-page":"335","DOI":"10.1136\/bjo.2009.174284","article-title":"Small incision corneal refractive surgery using the small incision lenticule extraction (SMILE) procedure for the correction of myopia and myopic astigmatism:Results of a 6 month prospective study","volume":"95","author":"Sekundo","year":"2011","journal-title":"Br J Ophthalmol"},{"key":"R14-20251006","doi-asserted-by":"crossref","first-page":"3886","DOI":"10.1167\/iovs.13-13714","article-title":"Mild decentration measured by a Scheimpflug camera and its impact on visual quality following SMILE in the early learning curve","volume":"55","author":"Li","year":"2014","journal-title":"Invest Ophthalmol Vis Sci"},{"key":"R15-20251006","doi-asserted-by":"crossref","first-page":"2316","DOI":"10.1167\/iovs.17-23451","article-title":"Relationship between decentration and induced corneal higher-order aberrations following small-incision lenticule extraction procedure","volume":"59","author":"Lee","year":"2018","journal-title":"Invest Ophthalmol Vis Sci"},{"key":"R16-20251006","doi-asserted-by":"crossref","first-page":"5537","DOI":"10.1167\/iovs.10-5341","article-title":"The development of an instrument to measure quality of vision:The Quality of Vision (QoV) questionnaire","volume":"51","author":"McAlinden","year":"2010","journal-title":"Invest Ophthalmol Vis Sci"},{"key":"R17-20251006","doi-asserted-by":"crossref","first-page":"760","DOI":"10.1097\/OPX.0b013e3182993856","article-title":"The quality of vision questionnaire:Subscale interchangeability","volume":"90","author":"McAlinden","year":"2013","journal-title":"Optom Vis Sci"},{"key":"R18-20251006","doi-asserted-by":"crossref","first-page":"e907","DOI":"10.1111\/aos.14420","article-title":"Corneal wavefront aberrations and subjective quality of vision after small incision lenticule extraction","volume":"98","author":"Siedlecki","year":"2020","journal-title":"Acta Ophthalmol"},{"key":"R19-20251006","doi-asserted-by":"crossref","first-page":"726","DOI":"10.3928\/1081597X-20151021-01","article-title":"Visual outcomes and optical quality after femtosecond laser small incision lenticule extraction:An 18-month prospective study","volume":"31","author":"Miao","year":"2015","journal-title":"J Refract Surg"},{"key":"R20-20251006","doi-asserted-by":"crossref","first-page":"362","DOI":"10.1016\/S0886-3350(00)00806-3","article-title":"Increased higher-order optical aberrations after laser refractive surgery:A problem of subclinical decentration","volume":"27","author":"Mrochen","year":"2001","journal-title":"J Cataract Refract Surg"},{"key":"R21-20251006","doi-asserted-by":"crossref","first-page":"088001","DOI":"10.1117\/1.JBO.19.8.088001","article-title":"Numerical nonwavefront-guided algorithm for expansion or recentration of the optical zone","volume":"19","author":"Arba Mosquera","year":"2014","journal-title":"J Biomed Opt"},{"key":"R22-20251006","first-page":"3349","article-title":"Optical response to LASIK surgery for myopia from total and corneal aberration measurements","volume":"42","author":"Marcos","year":"2001","journal-title":"Invest Ophthalmol Vis Sci"},{"key":"R23-20251006","doi-asserted-by":"crossref","first-page":"1951","DOI":"10.1016\/j.jcrs.2011.05.040","article-title":"Comparison of wavefront-guided aspheric laser in situ keratomileusis for myopia:Coaxially sighted corneal-light-reflex versus line-of-sight centration","volume":"37","author":"Okamoto","year":"2011","journal-title":"J Cataract Refract Surg"},{"key":"R24-20251006","doi-asserted-by":"crossref","first-page":"1733","DOI":"10.1007\/s10103-021-03358-2","article-title":"Centration of myopic refractive ablation:Should we center treatment on the pupil or the visual axis?","volume":"36","author":"Rabina","year":"2021","journal-title":"Lasers Med Sci"},{"key":"R25-20251006","doi-asserted-by":"crossref","first-page":"S98","DOI":"10.3928\/1081597X-20090115-04","article-title":"Outcomes of hyperopic LASIK with the NIDEK NAVEX platform centered on the visual axis or line of sight","volume":"25","author":"Kermani","year":"2009","journal-title":"J Refract Surg"},{"key":"R26-20251006","doi-asserted-by":"crossref","first-page":"467","DOI":"10.3928\/1081-597X-20060501-08","article-title":"Centration analysis of ablation over the coaxial corneal light reflex for hyperopic LASIK","volume":"22","author":"Chan","year":"2006","journal-title":"J Refract Surg"},{"key":"R27-20251006","doi-asserted-by":"crossref","first-page":"1710","DOI":"10.1167\/iovs.05-1049","article-title":"Comparison of the retinal image quality with a Hartmann-Shack wavefront sensor and a double-pass instrument","volume":"47","author":"D\u00edaz-Dout\u00f3n","year":"2006","journal-title":"Invest Ophthalmol Vis Sci"},{"key":"R28-20251006","doi-asserted-by":"crossref","first-page":"945","DOI":"10.1016\/j.ophtha.2010.09.014","article-title":"Straylight values after refractive surgery:Screening for ocular fitness in demanding professions","volume":"118","author":"van Bree","year":"2011","journal-title":"Ophthalmology"},{"key":"R29-20251006","doi-asserted-by":"crossref","first-page":"296","DOI":"10.3928\/1081597X-20140415-02","article-title":"Optical quality and intraocular scattering after femtosecond laser small incision lenticule extraction","volume":"30","author":"Miao","year":"2014","journal-title":"J Refract Surg"},{"key":"R30-20251006","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1016\/j.jcrs.2009.07.033","article-title":"Repeatability of measurements with a double-pass system","volume":"36","author":"Saad","year":"2010","journal-title":"J Cataract Refract Surg"},{"key":"R31-20251006","doi-asserted-by":"crossref","first-page":"1415","DOI":"10.1016\/j.jcrs.2009.03.022","article-title":"Optical quality of foldable monofocal intraocular lenses before and after injection:Comparative evaluation using a double-pass system","volume":"35","author":"Vilaseca","year":"2009","journal-title":"J Cataract Refract Surg"},{"key":"R32-20251006","doi-asserted-by":"crossref","first-page":"e16823","DOI":"10.1371\/journal.pone.0016823","article-title":"An objective scatter index based on double-pass retinal images of a point source to classify cataracts","volume":"6","author":"Artal","journal-title":"PLoS On"}],"container-title":["Indian Journal of Ophthalmology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ovid.com\/10.4103\/IJO.IJO_3017_22","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,13]],"date-time":"2026-08-13T18:58:27Z","timestamp":1786647507000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ovid.com\/10.4103\/IJO.IJO_3017_22"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,5]]},"references-count":32,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2023]]}},"URL":"https:\/\/doi.org\/10.4103\/ijo.ijo_3017_22","relation":{},"ISSN":["0301-4738","1998-3689"],"issn-type":[{"value":"0301-4738","type":"print"},{"value":"1998-3689","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,5]]},"assertion":[{"value":"2022-11-15","name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2023-01-09","name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}}]}}