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The femtosecond laser technology that brought new levels of safety, accuracy and predictability to LASIK surgery is also advancing cataract surgery. In our office, we call the procedure Refractive Laser-Assisted Cataract Surgery (ReLACS), but it also is known generally as laser cataract surgery.n traditional cataract surgery, the surgeon creates an opening in the capsule with a small needle and then uses that same needle or a forceps to tear the capsule in a circular fashion. In laser cataract surgery, the anterior capsulotomy is performed with a femtosecond laser.
Categories: lasers, light pulses. How to cite the article; suggest additional literature. A femtosecond laser is a laser which emits optical pulses with a duration well below 1 ps (â ultrashort pulses), i.e., in the domain of femtoseconds (1 fs = 10 â15 s). Some femtosecond lasers offer a stable linear polarization of the output, whereas others emit with an undefined polarization state. 2  The noise properties can differ strongly between different types and models of femtosecond lasers.