Effect of laser <i>in situ</i> keratomileusis with femtosecond laser on visual quality

Abstract

AIM: To compare the changes of the contrast sensitivity after LASIK with femtosecond laser and microkeratome and to explore the influence of different methods making corneal flap on visual quality. METHODS: There were 212 eyes in 106 myopes underwent excimer operation.According to the different methods of operation, they were divided into two groups: microkeratome group(SBK group)and femtosecond laser group(FS group). FS group: a total of 112 eyes in 56 patients received LASIK with femtosecond laser. SBK group: a total of 100 eyes in 50 patients received LASIK with microkeratome. Contrast sensitivity was detected preoperatively,and 1wk,3mo postoperatively and compared between the two groups. RESULTS: At 1wk after operation, the contrast sensitivity under photopic environment decreased in the two groups, compared with those before operation(PP>0.05). No statistical significant difference was found in contrast sensitivity under photopic environment at 1wk, 3mo between the two groups(P>0.05). At 1wk after the operation, the contrast sensitivity under scotopic environment decreased in both groups compared with those before operation(PPP>0.05). After 1wk, contrast sensitivity with glare stimulation in both groups decreased, compared with those before operation(PPP>0.05).CONCLUSION: LASIK with femtosecond laser can get a better visual quality than LASIK with microkeratome.

Keywords

• femtosecond laser
• ametropia
• contrast sensitivity
• laser <i>in situ</i> keratomileusis
• laser <i>in situ</i> keratomileusis