Laser machines used in the study included Mel 80, lasersight LSX, NIDEK EC5000, VISX 4star, AOV (66 vision) and 217Z.

• 准分子激光仪包括Mel80、lasersightLSX、NIDEK EC5000及VISX4star准分子仪、视可佳AOV、博士伦217Z准分子激光仪。