PMID- 10690820
OWN - NLM
STAT- MEDLINE
DCOM- 20000229
LR  - 20190726
IS  - 0161-6420 (Print)
IS  - 0161-6420 (Linking)
VI  - 107
IP  - 2
DP  - 2000 Feb
TI  - Photorefractive keratectomy versus laser in situ keratomileusis: a 
      control-matched study.
PG  - 251-7
AB  - OBJECTIVE: Photorefractive keratectomy (PRK) and laser in situ keratomileusis 
      (LASIK) outcomes were compared at 1, 3, 6, and 12 months after surgery. DESIGN: 
      Retrospective, nonrandomized, comparative study. PARTICIPANTS: One hundred seven 
      LASIK-treated eyes (58 patients) and 107 PRK-treated eyes (91 patients) having 
      myopia between -1 and -9.50 diopters (D). All LASIK-treated eyes were analyzed 
      retrospectively and matched with PRK-treated eyes having sphere within +/-0.25 D, 
      +/-1 D of cylinder, and +/-7 years of age. INTERVENTION: For PRK and LASIK, the 
      refractive surgery was performed with the slit-scanning excimer laser Nidek 
      EC-5000, (Nidek Co. Tokyo, Japan) MAIN OUTCOME MEASURES: Manifest refraction, 
      best-spectacle and uncorrected Snellen visual acuity, haze, halos, and 
      keratometry were evaluated before surgery and up to 12 months after surgery. 
      RESULTS: Seventy percent of eyes were evaluated at the 12-month postoperative 
      exam. Of these eyes, 83% of LASIK cases and 86% of PRK cases had uncorrected 
      visual acuities of 20/20 or better. Refractions within +/-0.5 D represented 78% 
      of the LASIK eyes and 83% of the PRK eyes at that follow-up. Patients who 
      underwent LASIK reported halos twice as often as patients who underwent PRK using 
      a subjective scale. The odds ratio of high halos for LASIK versus PRK was 3.50 
      (95% confidence interval, 1.89-6.46; P<0.0001). At 1 month after surgery, 64% of 
      the LASIK eyes were within +/-0.50 D compared with 77% of the PRK eyes. No eye 
      lost 2 Snellen lines of best corrected visual acuity at 6 or 12 months after 
      surgery. Ten PRK eyes (9.3%) and three LASIK eyes (2.8%) were retreated. 
      CONCLUSIONS: PRK and LASIK achieved equal refractive outcomes at all 
      postoperative follow-ups, but LASIK patients were twice as likely to experience 
      halos.
FAU - Pop, M
AU  - Pop M
AD  - Michel Pop Clinics, Montreal, Quebec, Canada.
FAU - Payette, Y
AU  - Payette Y
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - United States
TA  - Ophthalmology
JT  - Ophthalmology
JID - 7802443
SB  - IM
MH  - Adult
MH  - Astigmatism/physiopathology
MH  - Case-Control Studies
MH  - Cornea/*surgery
MH  - Glare
MH  - Humans
MH  - Keratomileusis, Laser In Situ/adverse effects/*methods
MH  - Lasers, Excimer
MH  - Myopia/*surgery
MH  - Photorefractive Keratectomy/adverse effects/*methods
MH  - Pupil/physiology
MH  - Refraction, Ocular
MH  - Retrospective Studies
MH  - Treatment Outcome
MH  - Vision Disorders/etiology
MH  - Visual Acuity/physiology
EDAT- 2000/02/26 09:00
MHDA- 2000/03/04 09:00
CRDT- 2000/02/26 09:00
PHST- 2000/02/26 09:00 [pubmed]
PHST- 2000/03/04 09:00 [medline]
PHST- 2000/02/26 09:00 [entrez]
AID - S0161-6420(99)00043-3 [pii]
AID - 10.1016/s0161-6420(99)00043-3 [doi]
PST - ppublish
SO  - Ophthalmology. 2000 Feb;107(2):251-7. doi: 10.1016/s0161-6420(99)00043-3.