SMILE与FS-LASIK术后屈光状态偏差原因分析及结果评价OACSTPCD

Objective To observe the deviation of refractive state after femtosecond laser valving combined with excimer laser in situ keratomileusis(FS-LASIK)and femtosecond laser small incision lens extraction(SMILE).Methods Retrospective clinical study.According to the operation method,the FS-LASIK group was divided into two groups:300 cases(600 eyes),and then divided into pre FS-LASIK 200 cases(400 eyes),FS-LASIK 100 cases(200 eyes),and SMILE group 100 cases(200 eyes).The preoperative spherical diopter was-0.75～12.25 D,and the columnar diopter was 0～3.75 D,with no degree reserved.The best corrected visual acuity(BCVA)≥1.0,respectively,before and at 1 day,1 week,1 month,3 months after the operation.The non-contact intraocular pressure measurement,uncorrected visual acu-ity(UCVA),BCVA,spherical equivalent refraction(SE),computer optometry and slit lamp microscopy were reviewed and recorded in the 6-month follow-up period.After the results of the correlation analysis of factors were obtained,a regres-sion model was established for regression analysis and further analysis was carried out according to the results.Results The postoperative refractive status was mainly influenced by the surgical method and preoperative cylindrical lens(P<0.05).At 7 days,1 month,3 months and 6 months after the operation,there were significant differences between the re-sults of the righteye cylindrical lens after FS-LASIK and those after SMILE(P<0.05)Conclusions The average uncor-rected degree of right ophthalmoscope in patients after SMILE was 0.25～0.50 D more than that in patients after FS-LASIK,which was mainly related to SMILE operation mode,eye spin and corneal epithelial remodeling behavior.It was suggested that patients with high altitude should adopt FS-LASIK operation or change SMILE operation mode to take out the lens immediately after scanning.