Photorefractive keratectomy with a small spot laser and tracker.

Background: The Autonomous Technologies LADARVision excimer laser system utilizes an eye tracking mechanism and a small spot for photorefractive keratectomy.

Methods: One hundred and two eyes of 102 patients were treated for -1.50 to -6.

Iatrogenic keratectasia after laser in situ keratomileusis.

Background: Lamellar refractive surgery reduces the biomechanical strength of the cornea which may lead to mechanical instability and keratectasia.

Methods: Three eyes had laser in situ keratomileusis (LASIK) for myopia from -10.00 to -13.

Comparison of corneal sensation following photorefractive keratectomy and laser in situ keratomileusis.

Purpose: To evaluate the effect of photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) on corneal sensation.

Setting: Eye Institute, Medical School of the University of Crete, Heraklion, Greece, and Orasis, Hellenic Eye Center of Athens, Greece.

Methods: In a masked study, corneal sensation was measured with the Cochet-Bonnet aesthesiometer in 40 consecutive patients 6 to 12 months following PRK and LASIK (60 mm constitutes normal reading and < 40 mm, abnormal).