Comparison of the corneal response to laser in situ keratomileusis with flap creation using the FS15 and FS30 femtosecond lasers

Abstract

Both the FS15 and FS30 lasers provided more reproducible flap thickness and fewer interface particles than previously observed using microkeratomes. The response of corneal keratocytes to intra-LASIK was reduced compared with previous results in which higher raster energies were used. Compared with the FS15, there was an apparent reduction in overall interface reflectivity and fewer interface particles with the FS30 laser.

Surface quality of human corneal lenticules after femtosecond laser surgery for myopia comparing different laser parameters

“…Comparing femtosecond lasers to microkeratomes, Patel and co-workers found an increased corneal backscatter associated with haze using a first generation of a 15-kHz laser for Femto-LASIK [25]. Petroll and colleagues demonstrated a positive correlation between keratocyte activation and pulse energy applied during femtosecond laser flap creation [26,27]. The use of the 60-kHz Intralase-laser with lower pulse energy than in previous models (15 and 30 kHz) induced less keratocyte activation [26,28].…”

Simulation of the temperature increase in human cadaver retina during direct illumination by 150-kHz femtosecond laser pulses

“…In contrast to initial systems, which operated at repetition rates of a few kilohertz, newer systems have introduced a progressive increase in repetition emission frequencies up to 15,30,60, and 150 kHz. [22][23][24] The increase in laser repetition permits the creation of a standard LASIK flap in a shorter time, which dramatically decreases the duration of the LASIK procedure. However, the higher repetition rate is accompanied by an increase of the average power reaching the retina with a potential risk of thermal damage.…”

Laser in situ keratomileusis for residual refractive errors after apodized diffractive multifocal intraocular lens implantation

“…Studies [12][13][14] of LASIK for residual ametropia after multifocal IOL implantation show it provides long-term successful correction.…”