飞秒激光小切口透镜取出术矫正近视及散光的临床疗效观察

doi:10.19739/j.cnki.issn1001-9510.2019.02.006

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Abstract Objective To observe the clinical effect of femtosecond laser small incision lenticule extraction in the treatment of myopia and astigmatism.Methods In the prospective case study,45 cases with 90 eyes received SMILE surgery treatment. The average equivalent spherical mirrors for preoperative was (-4.05±1.36) D. The smile surgeries used 500 KHZ VisuMax femtosecond laser and the energy was 115 nj.The point spacing was 3.0 microns and spot size was 1.5 microns.The micro lens diameter was 6.0 to 6.5 mm. The base thickened was 10 microns and the corneal cap was 6.8 to 7.5 mm in diameter.The thickness of the cap was 130-140 microns and the edge cut was 2 mm with the location of 120 degrees.The changes of the surface curvature before and after operation were observed. The mean follow-up time was 3 months.Results All patients achieved or exceeded the best corrected visual acuity before surgery, and none of them lost the best corrected visual acuity.There was a statistically significant difference in vision between 1d postoperative and 1mo postoperative and 3mo postoperative (P＜0.05).Comparison of postoperative residual equivalent spherical lens with postoperative 1d, postoperative 1wk, postoperative 1mo and postoperative 3mo could not be considered statistically significant (P＞0.05).Comparison between 1d postoperative,1wk postoperative,1mo postoperative and 3 mo postoperative after intraocular pressure cannot be considered statistically significant (P＞0.05).There were statistically significant differences between 1d postoperative and 1wk postoperative,1mo postoperative and 3mo postoperative after anterior corneal surface curvature (P＜0.05).Comparison of postoperative 1mo and postoperative 3mo on the posterior corneal surface before surgery, 1d after surgery and 1wk after surgery cannot be considered statistically significant (P＞0.05).Conclusion Femtosecond laser small incision lens removal has good predictability, safety, predictability and stability in the correction of myopia and astigmatism. The corneal remodeling process after SMILE was mainly caused by the changes in the curvature of the anterior surface of the cornea, which reached a stable state about 3 months later.

Key words： femtosecond laser small incision lenticule extraction myopia astigmatism

Received: 24 January 2019

PACS:

R779.63

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	Articles by authors
	SU Yue
	DING Dongmei
	FU MengJun
	ZHANG Haorun
	ZHANG Shaobin
	HUO Lei

Cite this article:

SU Yue,DING Dongmei,FU MengJun, et al. Clinical observation of femtosecond laser small incision lenticule extraction in the treatment of myopia and astigmatism[J]. 滨州医学院学报, 2019, 42(2): 99-101.

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http://manu58.magtech.com.cn/Jwk_bzyxy/EN/10.19739/j.cnki.issn1001-9510.2019.02.006 OR http://manu58.magtech.com.cn/Jwk_bzyxy/EN/Y2019/V42/I2/99

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