Femtosecond lasers and their many applications have improved the safety, efficiency, predictability, and speed of many corneal surgical procedures.1 Currently, Abbott Medical Optics is offering the fifth-generation of the Intralase FS laser and there are other available options by companies including Wave-light/Alcon, Zeimer, Carl Zeiss Meditec, and Techno-las Perfect Vision. The Smarttech 150 by Schwind will soon join this list. When compared, femtosecond lasers have similar central wavelength and pulse duration characteristics. Their differences arise primarily from a relatively wide range of repetition rates (80 kHz to 5 MHz) and pulse energy (10 nj to 5 |ij), which could explain some of the pros and cons with each device. Other differences lie in the design of the device, consumables, and software.
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