TY - JOUR
T1 - Treatment of irregular astigmatism with a 213 nm solid-state, diode-pumped neodymium: YAG ablative laser
AU - Anderson, I.
AU - Sanders, D.R.
AU - Van Saarloos, P.
AU - Ardrey, William
PY - 2004
Y1 - 2004
N2 - Purpose: To present the outcome of photorefractive keratectomy (PRK) using a new neodymium:YAG (Nd:YAG) laser in patients with irregular astigmatism.Setting: Claremont Eye Clinic, Claremont, and the University of Western Australia, Perth, Australia.Methods: In 3 patients with irregular astigmatism, PRK was performed with a solid-state, 213 nm wavelength, 300 Hz scanning-spot, diode-pumped Nd:YAG ablative laser (CustomVis(R) Pulzar(R) laser system). The 3 patients had had previous PRK with penetrating keratoplasty, astigmatic keratotomy, or limbal relaxing incisions. At 3 and 6 months, best spectacle-corrected visual acuity (BSCVA), uncorrected visual acuity (UCVA), manifest refraction, contrast sensitivity, and corneal topography were measured.Results: The first patient had a 1-line improvement in BSCVA and a 4-line improvement in UCVA, a 3.00 diopter (D) decrease in keratometric cylinder, and improvement in contrast sensitivity. The second patient had a 7.00 D decrease in myopia in 1 meridian and a 4.25 D decrease in the refractive cylinder in the other meridian. The third patient had a 2-line improvement in BSCVA, a 5-line improvement in UCVA, a 2.00 D decrease in the refractive cylinder, and improvement in contrast sensitivity.Conclusion: The laser's combination of a small spot, a fast pulse rate, and ultrafast tracking/scanning resulted in good results in 3 patients with difficult irregular astigmatism. (C) 2004 ASCRS and ESCRS.
AB - Purpose: To present the outcome of photorefractive keratectomy (PRK) using a new neodymium:YAG (Nd:YAG) laser in patients with irregular astigmatism.Setting: Claremont Eye Clinic, Claremont, and the University of Western Australia, Perth, Australia.Methods: In 3 patients with irregular astigmatism, PRK was performed with a solid-state, 213 nm wavelength, 300 Hz scanning-spot, diode-pumped Nd:YAG ablative laser (CustomVis(R) Pulzar(R) laser system). The 3 patients had had previous PRK with penetrating keratoplasty, astigmatic keratotomy, or limbal relaxing incisions. At 3 and 6 months, best spectacle-corrected visual acuity (BSCVA), uncorrected visual acuity (UCVA), manifest refraction, contrast sensitivity, and corneal topography were measured.Results: The first patient had a 1-line improvement in BSCVA and a 4-line improvement in UCVA, a 3.00 diopter (D) decrease in keratometric cylinder, and improvement in contrast sensitivity. The second patient had a 7.00 D decrease in myopia in 1 meridian and a 4.25 D decrease in the refractive cylinder in the other meridian. The third patient had a 2-line improvement in BSCVA, a 5-line improvement in UCVA, a 2.00 D decrease in the refractive cylinder, and improvement in contrast sensitivity.Conclusion: The laser's combination of a small spot, a fast pulse rate, and ultrafast tracking/scanning resulted in good results in 3 patients with difficult irregular astigmatism. (C) 2004 ASCRS and ESCRS.
U2 - 10.1016/j.jcrs.2004.03.032
DO - 10.1016/j.jcrs.2004.03.032
M3 - Article
C2 - 15474828
VL - 30
SP - 2145
EP - 2151
JO - JOURNAL OF CATARACT & REFRACTIVE SURGERY
JF - JOURNAL OF CATARACT & REFRACTIVE SURGERY
SN - 0886-3350
IS - 10
ER -