title: Photorefractive keratectomy with a small spot laser and tracker.
abstract: 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 -6.25 D of spherical myopia at the spectacle plane using a 6-mm diameter ablation zone. One year follow-up was available for 93 eyes (91%).
  
  
  RESULTS
  Uncorrected visual acuity for eyes treated for distance vision was 20/40 or better in 99% (n = 90), and 20/20 or better in 70% (n = 64) of eyes at 12 months. Spectacle-corrected visual acuity was 20/25 or better in all 92 eyes reported; no eye lost more than 2 lines of spectacle-corrected visual acuity, and only 1 eye (1.0%) experienced a loss of 2 lines (20/12.5 to 20/20) at 1 year. The refractive result was within +/- 0.50 D of the desired correction in 75% (n = 70), and within +/- 1.00 D in 93% (n = 86) of eyes at 12 months. Refractive stability was achieved between 3 and 6 months. Corneal haze was graded as trace or less in 100% of the 93 eyes. No significant reductions were noted in contrast sensitivity or endothelial cell density.
  
  
  CONCLUSIONS
  Patients treated with the Autonomous Technologies LADARVision excimer laser system for -1.50 to -6.25 D of spherical myopia with 1 year follow-up had uncorrected visual acuity of 20/20 or better in 70%, no significant loss of spectacle-corrected visual acuity, no reduction of endothelial cell density or contrast sensitivity, and low levels of corneal haze.
authors: University of Crete, Department of Ophthalmology, Heraklion, Greece.
authors: I G
authors: IG
authors: Pallikaris
authors: K I
authors: KI
authors: Koufala
authors: D S
authors: DS
authors: Siganos
authors: T G
authors: TG
authors: Papadaki
authors: V J
authors: VJ
authors: Katsanevaki
authors: V
authors: V
authors: Tourtsan
authors: M B
authors: MB
authors: McDonald
mesh_terms: D000293:Adolescent; D000328:Adult; D002452:Cell Count; D003315:Cornea / Q000601:surgery*; D004728:Endothelium, Corneal / Q000473:pathology; D005133:Eye Movements; D005139:Eyeglasses; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007429:Intraocular Pressure; D054018:Lasers, Excimer; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000601:surgery*; D017060:Patient Satisfaction; D018903:Photorefractive Keratectomy / Q000295:instrumentation / Q000379:methods*; D012029:Refraction, Ocular; D014792:Visual Acuity