Abstract | PURPOSE: 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 Pulzar 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.
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Authors | Ian Anderson, Donald R Sanders, Paul van Saarloos, William J Ardrey 4th |
Journal | Journal of cataract and refractive surgery
(J Cataract Refract Surg)
Vol. 30
Issue 10
Pg. 2145-51
(Oct 2004)
ISSN: 0886-3350 [Print] United States |
PMID | 15474828
(Publication Type: Case Reports, Journal Article)
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Topics |
- Adult
- Astigmatism
(surgery)
- Contrast Sensitivity
(physiology)
- Cornea
(surgery)
- Corneal Topography
- Female
- Humans
- Keratoplasty, Penetrating
- Keratotomy, Radial
- Lasers, Excimer
- Male
- Middle Aged
- Photorefractive Keratectomy
(methods)
- Treatment Outcome
- Visual Acuity
(physiology)
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