PURPOSE To evaluate refractive outcomes of wavefront-guided LASIK (Zyoptix, Bausch & Lomb) versus standard LASIK (PlanoScan, Bausch & Lomb) in retreatment of primary LASIK for myopia and myopic astigmatism. METHODS A prospective, randomized trial with paired eye control of 74 eyes from 37 patients who underwent LASIK retreatment was performed. Each patient underwent retreatment using Zyoptix ...

purpose: to assess the efficacy and safety of laser in situ keratomileusis (lasik) for correction of residual myopia and astigmatism after penetrating keratoplasty (pk). methods: in this prospective interventional case series, lasik was performed on 14 eyes of 13 patients unable to wear glasses or contact lenses after pk. the interval between lasik and pk was at least one year. all patients had...

Laser in-situ keratomileusis (LASIK) is a commonly performed surgical procedure used to correct refractive error. LASIK surgery involves cutting a corneal flap and ablating the stroma underneath, with known damage to corneal nerves. Despite this, the epidemiology of persistent pain and other long-term outcomes after LASIK surgery are not well understood. Available data suggest that approximatel...

purpose: to compare tear secretion values following lasik (laser in situ keratomileusis) and photorefractive keratectomy (prk). methods: patients referred to aban eye clinic (isfahan, iran) for refractive surgery were randomly assigned to lasik or prk. exclusion criteria were contraindications for refractive surgery, usage of topical ocular drugs, dry eye and reoperation. schirmer test was perf...

Thin-flap laser in situ keratomileusis (LASIK) is a general term used to describe LASIK performed under intentionally created thin flaps of 130 μm thickness or less. Thinflap LASIK has been proven to be a safe, effective, and predictable procedure for myopic refractive corrections (1-6). It has the potential advantage of preserving more posterior corneal tissue available for laser ablation and ...

Purpose To investigate ex vivo potentially different corneal biomechanical properties after small-incision lenticule extraction (SMILE) versus LASIK for myopic correction. Methods Thirty human donor corneas were subjected to either myopic SMILE or femtosecond laser-assisted LASIK. Donor corneas were assigned to six investigative groups: Group A, -3.00 D (diopters) SMILE; Group B, -8.00 D SMIL...

PURPOSE To investigate whether an initial keratocyte loss intensifies central corneal wound repair after LASIK in rabbits. METHODS New Zealand White rabbits received either conventional LASIK (-8 D, 6-mm diameter) or LASIK combined with a 7-mm diameter, epithelial denudation (LASIK-scrape). Animals were examined during 4 months by slit lamp and in vivo confocal microscopy to monitor changes i...

purpose: to compare the safety, efficacy, and visual results of laser in situ keratomileusis (lasik) in eyes with and without previous scleral buckling surgery in the same individuals. methods: in a prospective clinical trial, 14 eyes of 7 patients with myopic refractive error and history of scleral buckling in one eye, underwent lasik surgery in both eyes according to a standard surgical proto...

PURPOSE To investigate corneal healing and the factor(s) possibly responsible for refractive changes after laser in situ keratomileusis (LASIK). METHODS Twenty eyes of 10 patients who underwent LASIK for myopia were examined clinically and by real-time confocal microscopy for 6 months. Epithelial and posterior stromal thicknesses and the thickness of the keratocyte activation zone were measur...

BACKGROUND Tetracaine and proparacaine are two of the most commonly used medications for providing topical anesthesia in laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK). These agents have not been previously compared in a prospective manner to determine their efficacy in these settings. METHODS This prospective, single-masked, randomized study comprised 256 eyes fro...