Femtosecond Laser vs Mechanical Microkeratome for Hyperopic Laser In Situ Keratomileusis

Predictability of corneal flap thickness in laser in situ keratomileusis using a 200 kHz femtosecond laser

“…1 With advances in femtosecond lasers, clinical safety and outcomes with their use have improved. 11,12 Current mechanical microkeratomes create LASIK flaps with an SD of approximately 22 to 26 mm. 9,6,13,14 In this study, flap thickness was found to have excellent predictability with a lower SD (13.9 mm) for flap- thickness variability compared with that generally achieved by mechanical microkeratomes.…”

Assessment of refractive outcome of femtosecond-assisted LASIK for hyperopia correction

“…As previous studies reported better refractive results with femtosecond laser flap creation than with mechanical microkeratome flap creation (14, 15), the purpose of this study was to evaluate the refractive outcome of femtosecond-assisted LASIK for the correction of hyperopia using the Alcon-WaveLight FS200 femtosecond laser system and the Allegreto EX500 as using a femtosecond laser in flap creation has potential benefits, as it creates a smoother stromal bed under the created flap, which is assumed to yield better refractive outcomes after laser refractive surgery (14–25). In this study, a flap creation as large as 9.3 mm was intended to allow accurate placement of the peripheral laser ablation inside the stromal bed and avoid hitting the peripheral epithelium, which eventually will regenerate with no refractive effect, leading to a more accurate and potentially more stable ablation.…”

“…In this study, a flap creation as large as 9.3 mm was intended to allow accurate placement of the peripheral laser ablation inside the stromal bed and avoid hitting the peripheral epithelium, which eventually will regenerate with no refractive effect, leading to a more accurate and potentially more stable ablation. A planar flap results in less cutting of peripheral stromal fibers (14–25). In addition, the stroma bed is relatively dry after flap lifting, which may improve the efficacy of laser ablation, resulting in more optimal refractive outcome of hyperopia correction (14, 15, 24).…”

“…A planar flap results in less cutting of peripheral stromal fibers (14–25). In addition, the stroma bed is relatively dry after flap lifting, which may improve the efficacy of laser ablation, resulting in more optimal refractive outcome of hyperopia correction (14, 15, 24). Further, strong adhesion of the flap in the postoperative period may produce a stronger biomechanical flap stability (20).…”

Femtosecond laser in corneal surgery

“…[24] провели ретроспективное нерандомизированное интервенционное сравнительное исследование серии случаев, проанализировав результаты гиперметропического LASIK, выполненного на 72 глазах с помощью фемтосекундного лазера IntraLase 60 кГц, и гиперметропического LASIK, выполненного на 72 глазах с помощью микрокератома Moria M2. Они установили, что в группе фемтоLASIK наблюдается статистически достоверно меньшая величина остаточного сферического компонента и более высокая некорригированная острота зрения по сравнению с группой LASIK посредством микрокератома.…”