J Korean Ophthalmol Soc.  2003 Sep;44(9):2105-2110.

Comparison of Refractive Outcomes of Broad Beam and Flying Spot Excimer Laser after Photorefractive Keratectomy

• Cho H
• Tchah HW

Abstract

PURPOSE
To assess the refractive outcomes in photorefractive keratectomy (PRK) of two eximer lasers: Broad beam and Flying spot laser. METHODS: We compared the refractive outcomes of 74 eyes (group I) treated with a VISX 20/20(excimer laser (VISX Inc. USA) using broad beam laser with those of 96 eyes (group II) treated with a Technolas 217 C-Lasik(TM) (Bausch and Lomb, USA) using flying spot laser. Each patients had been followed up for more than 6 months after surgery.
RESULTS
Corneal astigmatism at preoperation were 1.25 +/- 0.62D in group I and 1.03 +/- 0.51D in group II and at postoperative 6 months, decreased to 1.12 +/- 0.53D in group I and 0.60 +/- 0.83D in group II. Manifest refraction were outside +/- 1D of spherical lens or 0.5 D of cylinder lens in 23.6 % in group I and 13.5% in group II.
CONCLUSIONS
We suggests that PRK using flying spot laser effectively more reduces corneal astigmatism and provided more satisfactory predictability in refractive results than that of broad beam laser.

Keyword

Photorefractive keratectomy; Technolas 217 C-Lasik; VISX 20/20

MeSH Terms

Astigmatism
Diptera*
Humans
Lasers, Excimer*
Photorefractive Keratectomy*