Glossary term
Femtosecond Laser
Reference only — not medical advice. See disclaimer.
An infrared laser that delivers ultrashort pulses of light measured in femtoseconds (quadrillionths of a second) to create precise incisions or separations within tissue with minimal heat generation. In refractive surgery it is used to create the corneal flap in LASIK or to perform the lenticule extraction in SMILE, replacing the mechanical microkeratome blade.