% discount on cost of PI | Number of cataract operations/year | ||||
2000 | 3000 | 4000 | 5000 | 6000 | |
4:1 model | 91 | 84 | 81 | 79 | 78 |
3:1 model | 96 | 89 | 86 | 84 | 82 |
2:1 model | n/a | 99 | 95 | 93 | 92 |
CPS, conventional phacoemulsification surgery; FLACS, femtosecond laser-assisted cataract surgery; OR, operating room; PI, patient interface.