compare laser technology systems

All laser surgery systems are not the same. While they all use laser beams to reshape the cornea, there are important differences in technology from one system to another. Because these differences could affect your laser eye surgery procedure's outcome, understanding why technology matters is very important. These charts can help you compare the features of the laser systems used.

Features of the Most Commonly Used Laser Systems

	Alcon LADARVision® System (with 4000)	VISX Star* S4	B&L Technolas* 217
Does it include a custom wavefront device?	Yes	Yes	Yes
Does it allow for accurate alignment of wavefront information?	Yes	Unknown	No
Type of eye tracking	Laser	Video	Video
Is it an open- or closed-loop system?	Closed	Open	Open
Does it compensate for saccadic eye movements?	Yes	No	No
Type of laser beam	Small Spot	Broad Beam	Small Spot

Specific Vision Problems Treated by Laser Systems

All laser systems must be approved by the FDA to treat specific vision problems. This chart outlines current laser approvals. For information on the specific treatment ranges see the FDA's site on LASIK surgery.

	Alcon LADARVision® System (with 4000)	VISX Star* S4	B&L Technolas* 217
Myopia	X	X	X
Myopia with astigmatism	X	X	X
Hyperopia	X	X	X
Hyperopia with astigmatism	X	X	X
Mixed Astigmatism	X	X
Customized laser vision correction	X	X	X
Higher order aberrations	X		X
Improved visual contrast	X		X

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