Dps. Obrart et al., DISCRIMINATION BETWEEN THE ORIGINS AND FUNCTIONAL IMPLICATIONS OF HAZE AND HALO AT NIGHT AFTER PHOTOREFRACTIVE KERATECTOMY, Journal of refractive and corneal surgery, 10(2), 1994, pp. 281-281
A series of 84 eyes with up to -6.00 diopters (D) of myopia were treat
ed by photorefractive keratectomy (PRK) using a 5.00 mm ablation zone.
Three months postoperatively, 43 eyes (51%) complained of disturbed n
ight vision, compared to 12 (14%) preoperatively. Ten (12%) had signif
icant problems, ie, interference with driving at night. At 12 months,
there were 32 patients (38%) with minor disturbances of night vision,
4 (5%) with significant problems.