Comparison Of Visual Quality After The Treatment Of SMILE And FS-LASIK In Short-term

OBJECTIVETo compare the visual quality of the patients in early stage after the treatment of small-incision lenticule extraction (SMILE) and femtosecond laser-assisted laser in situ keratomileusis (FS-LASIK).METHOEDS107 eyes of 54 patients who scheduled in Peking Union Medical College Hospital for SMILE and FS-LASIK were chosen in this study. Optical Quality analysis system(OQAS) was used to detect the value of OSI, MTF cut off, Strehl ratio, Width at 50%, Width at 10%, VA100%, VA20%, VA9%, OV100%, OV20%, OV9%, mean OV, mean OSI for each patient before and 1st week,1st month after the treatment. A subjective questionnaire of visual quality, involving the symptoms of halo, glare, apparent fatigue in near vision, visual loss at night and dye eye, and satisfaction degree, was completed by the patients 1st week and 1st month after the treatment. Mann-Whitney U test, Friedman test, Kruskal-Wallis test and Spearman coefficient were applied to analysis the data, with the statistics software, SPSS 19.0.RESULTS1. MTF cut off was significant higher in SMILE group than that in FS-LASIK group in 1st week, while there was no significant difference in 1st month.2. Visual quality significantly decreased in both 2 groups 1st week after the treatment. It increased 1st month after the treatment, but still not returned to the level before the treatment.3. Mean OSI was significant relevant to the severity of apparent fatigue in near vision. Mean OV was significant relevant to the severity of vision loss at night.4. Both of the two groups got a high satisfactory degree. There was no significant difference between the two groups.5. Dry eye symptom was more severe in FS-LASIK group than that in SMILE group in 1st week. There was no significant difference between the 2 groups.CONCLUSIONS1. Scatter light increased in both SMILE group and FS-LASIK group 1st week after the treatment. Scatter light significant decreased in 1st month than that in 1st week, but still not return to the level before the treatment.2. Visual quality of SMILE group 1st week after the treatment was significant better than that of FS-LASIK group. Dry eye symptom was more severe in FS-LASIK group than that in SMILE group in 1st week. There was no significant difference in 1st month between the two groups.