1, LASIK):3600/ eye.
2. Excimer laser keratomileusis (SBK) under the anterior elastic layer: 4400 eyes.
3. Epi-LASIK with microkeratome: 5000 eyes.
4. wavefront aberration+excimer laser in situ keratomileusis (wavefront guided +LASIK):8000/ eye.
5. Wavefront guidance +SBK: 8800 eyes.
6. Wavefront guidance +Epi-LASIK:9400/ pair.
7. Femtosecond laser plus laser keratomileusis under anterior elastic layer (Fs+SBK): 12800/ eye.
8. Femtosecond laser+wavefront aberration+laser keratomileusis under anterior elastic layer (FS+ wavefront guidance +SBK): 16800/ eye.