Objective To evaluate the changes in higher order aberration (HOA) in myopic patients after small incision lenticular extraction (SMILE); to compare the relationship between spherical equivalent refractive error (SE) and aberrations. Methods This was a retrospective study. Forty patients (76 eyes) with myopia underwent small-incision lenticular extraction using the Visumax femtosecond laser. Postoperative changes in corneal HOA, uncorrected visual acuity (UCVA) and SE were analyzed during a 3 months follow-up period. The main outcome measures of HOA, UCVA and SE before and after the surgery were evaluated. Data were analyzed using ANOVA and pearson correlation. Results Corneal HOAs for 3 mm and 5 mm corneal diameters increased slightly. For the 5 mm corneal diameter, significant increases in corneal HOA and spherical aberrations (SA) were measured 1 month after surgery (P<0.05). Three months after surgery, SA also increased compared to measurements 1 month after surgery (P<0.05), for the 3 mm corneal diameter, SA also increased compared to 1 month after surgery (P<0.05). Significant correlations were found between preoperative SE and total HOA, coma aberrations, or trefoil aberrations. At spatial frequencies of 5, 10, 15, 20, 25, and 30 c/d, modulation transfer function (MTF) 1 day after surgery increased significantly compared to preoperative measurements (P<0.01), and then decreased 1 week after surgery (P<0.05). At 3, 6, 12, 18 c/d, contrast sensitivity (CS) slightly increased over time. There were no serious intraoperative or postoperative complications in this study. Conclusion Significant improvement in UCVA and was observed after surgery, but there was also an increase in HOA, especially SA. More HOA were induced after surgery with a larger preoperative SE.
兰文,黄振平,陆燕,夏元,施宇华,王春红. SMILE术后视觉质量分析[J]. 中华眼视光学与视觉科学杂志, 2014, 16(8): 483-486.
Lan Wen,Huang Zhenping,Lu Yan,Xia Yuan,Shi Yuhua,Wang Chunhong. An analysis of visual quality after SMILE surgery. Chinese Journal of Optometry Ophthalmology and Visual science, 2014, 16(8): 483-486. DOI: 10.3760/cma.j.issn.1674-845X.2014.08.009
Kim P, Sutton GL, Rootman DS. Applications of the femtosecond laser in corneal refractive surgery[J]. Curr Opin Ophthalmol,2011,22:238-244.
[2]
Ang EK, Couper T, Dirani M, et al. Outcomes of laser refractive surgery for myopia[J]. J Catatract Refract Surg,2009, 35:921-933.
[3]
Sekundo W, Kunert K, Russmann C, et al. First efficacy and safty study of femtosecond lenticule extraction for the correction of myopia: six-month results[J]. J Cataract Refract Surg,2008, 34:1513-1520.
[4]
Blum M, Kunert K, Schroder M, et al. Femtosecond lenticule extraction for the correction of myopia: preliminary 6-month results[J]. Graefes Arch Clin Exp Ophthalmol,2010,248:1019-1027.
[5]
Chalita MR, Chavala S, Xu M, et al. Wavefront analysis in post-lasik eyes and its correlation with visual symptoms, refraction, and topography[J]. Ophthalmology,2004,111:447-453.
[6]
Sekundo W, Kunert KS, Blum M. Small incision corneal refractive surgery using the small incision lenticule extraction (SMILE) procedure for the correction of myopia and myopia astigmatism: results of a 6 month prospective study[J]. Br J Ophthalmol,2011,95:335-339.
[7]
Shah R, Shah S, Sengupta S. Results of small incision lenticule extraction: all-in-one femtosecond laser refractive surgery[J]. J Cataract Refract Surg,2011,37:127-137.
[8]
Vetter JM, Holzer MP, Teping C, et al. Intraocular pressure during corneal flap preparation: comparison among four femtosecond lasers in porcine eyes[J]. J Refract Surg,2011,27:427-433.
[9]
Moreno-Barriuso E, Lloves JM, Marcos S, et al. Ocular aberrations before and after myopic corneal refractive surgery: LASIK-induced changes measured with laser ray tracing[J]. Invest Ophthalmol Vis Sci,2001,42:1396-1403.
[10]
Hejcmanov?觃 M, Horkov M. Effect of LASIK refractive procedures on visual functions in patients with myopia[J]. Cesk Slov Oftalmol,2006,62:206-217.
[11]
Lackner B, Pieh S, Funovics MA, et al. Influence of spectacle-related changes in retinal image size on contrast sensitivity function after laser in situ keratomileusis[J]. J Cataract Refract Surg,2004,30:626-632.
[12]
Porter J, MacRae S, Yoon G, et al. Separate effects of the microkeratome incision and laser ablation on the eye′s wave aberration[J]. Am J Ophthalmol,2003,136: 327-337.
[13]
Pallikaris IG, Kymionis GD, Panagopoulou SI, et al. Induced optical aberrations following formation of a laser in situ keratomileusis flap[J]. J Cataract Refract Surg,2002,28:1737-1741.
[14]
Sarayba MA, Ignacio TS, Binder PS, et al. Comparative study of stromal bed quality by using mechanical, intralase femtosecond laser 15- and 30-kHz microkeratomes[J]. Cornea,2007,26:446-451.
[15]
Kamiya K, Shimizu K, Igarashi A, et al. Comparison of visual acuity, higher-order aberrations and corneal asphericity after refractive lenticule extraction and wavefront-guided laser-assisted in situ keratomileusis for myopia[J]. Br J Ophthalmol,2013,97:968-975.
[16]
Binder PS. Flap dimensions created with the IntraLase FS laser[J]. J Cataract Refract Surg,2004,30:26-32.
[17]
Kim JY, Kim MJ, Kim TI, et al. A femtosecond laser creates a stronger flap than a mechanical microkeratome[J]. Invest Ophthalmol Vis Sci,2006,47:599-604.