Photoastigmatic refractive keratectomy for correction of astigmatism after keratoplasty.
BACKGROUND
The efficacy and safety of photoastigmatic refractive keratectomy (PARK) to correct astigmatism after keratoplasty was evaluated.


METHODS
PARK was performed using the Nidek EC-5000 excimer laser in 10 eyes of 10 patients (mean age: 49.5 +/- 11.5 years) with astigmatism after keratoplasty.


RESULTS
The refractive cylinder decreased from 5.80 to 3.20 D, whereas at 6 months, topographic cylinder decreased from 7.40 to 5.90 D post-operatively. Five eyes (50%) had uncorrected visual acuity of 20/60 or better at 3 months. Stromal haze increased from 3 to 6 months postoperatively, and at 6 months, 5 eyes (50%) had a haze score of greater than or equal to 2.0.


CONCLUSIONS
PARK is a moderately effective method of correcting astigmatism after keratoplasty.
Bansal
A K
AK
L.V. Prasad Eye Institute, Hyderabad, India. akb@lvpeye.stph.net
D001251:Astigmatism / Q000209:etiology / Q000473:pathology / Q000601:surgery*; D003318:Corneal Opacity / Q000209:etiology / Q000473:pathology; D003319:Corneal Stroma / Q000473:pathology; D019781:Corneal Topography; D005139:Eyeglasses; D005500:Follow-Up Studies; D006801:Humans; D015948:Keratoplasty, Penetrating / Q000009:adverse effects*; D054018:Lasers, Excimer; D008875:Middle Aged; D018903:Photorefractive Keratectomy; D012029:Refraction, Ocular; D012086:Reoperation; D016896:Treatment Outcome; D014792:Visual Acuity