Table 3.

Commercially available keratorefractive lenticule extraction (KLEx) platforms.

Parameters	SMILE	CLEAR	SILK	SmartSight
Femtosecond Laser Platform	ZEISS VISUMAX 500	Ziemer Z8	Elita	SCHWIND ATOS
Approval	CE/FDA	CE	CE	CE
Possible refractive cuts	Flap/Lenticule	Flap/Lenticule/Arcuate	Lenticule	Flap/Lenticule
Refractive correction range	−0.5 to −10 DS 0 to -5DC	−0.5 to −10 DS 0 to -5DC	−0.5 to −12 DS 0 to -6DC	−0.5 to −12 DS 0 to -6DC
FS Energy (Nanojoules)	110–150	<100	40–50	75–135
Patient Interface	Machine fixed	Handheld	Machine fixed	Machine fixed
Automated Pupil Detection	Absent	Present	Present	Present
Cyclotorsion Compensation	Absent	Present	Present	Present