SMILE术后视觉质量分析

doi:10.3760/cma.j.issn.1674-845X.2014.08.009

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Abstract

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.

Key words： Femtosecond laser Small incision lenticule extraction Higher-order aberration Contrast sensitivity Modulation transfer function

Corresponding Authors: Huang Zhenping，Email：hzp19633@hotmail.com

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	Lan Wen
	Huang Zhenping
	Lu Yan
	Xia Yuan
	Shi Yuhua
	Wang Chunhong

Cite this article:

Lan Wen,Huang Zhenping,Lu Yan等. An analysis of visual quality after SMILE surgery[J]. Chinese Journal of Optometry Ophthalmology and Visual science, 2014, 16(8): 483-486.

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https://www.cjoovs.com/EN/10.3760/cma.j.issn.1674-845X.2014.08.009 OR https://www.cjoovs.com/EN/Y2014/V16/I8/483

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