[Combined myopia-astigmatism correction. A comparison with pure myopia correction].
BACKGROUND
Myopic PRK up to 6 D is an approved and safe procedure. The efficacy and safety of combined treatment of myopia and astigmatism in compound myopic astigmatism (PARK) have not yet been demonstrated.


METHODS
In a prospective study in 342 eyes the results of myopic PRK were compared to those of correction of compound myopic astigmatism (PARK).


RESULTS
Regarding spherical refraction achieved there was no significant difference between groups. Best corrected visual acuity only improved in the group with high astigmatism; this group also showed the least number of Central Islands. Permanent haze and steroid-induced glaucoma or cataract were not observed after treatment up to 6 D. Average astigmatism of 2.24 D was be reduced to 0.53 D 1 year post-operatively.


CONCLUSIONS
Correction of astigmatism resulted in undercorrection of approximately 30%. Our experience with the keracor shows PRK up to 6 D with or without additional correction of astigmatism (PARK) to be comparatively safe in terms of regression and complications and equally accurate in reaching spherical target refraction.
Fiedler
G
G
Pertzsch
M
M
Lackner
W
W
Gruppe
V
V
D000328:Adult; D001251:Astigmatism / Q000175:diagnosis / Q000601:surgery*; D003131:Combined Modality Therapy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D054018:Lasers, Excimer; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000175:diagnosis / Q000601:surgery*; D018903:Photorefractive Keratectomy; D011183:Postoperative Complications / Q000209:etiology; D012029:Refraction, Ocular; D016896:Treatment Outcome; D014792:Visual Acuity
Kombinierte Myopie-Astigmatismus-Korrektur. Vergleich zur reinen Myopie-Korrektur.