J Korean Ophthalmol Soc.  1997 Apr;38(4):559-566.

Corneal Haze after Excimer Laser Photorefractive Keratectomy for Myopia

• Hanh YH
• Jeung YW
• Roh JH

Abstract

To evaluate croneal haze related to amount of correction, age and sex following excimer laser photorefractive keratectomy(PRK) in myopic eyes, 39months follow-up study on 358 eyes was performed prospectively. The preoperative spherical equivalent refraction ranged from -1.0D to 11.25D(mean -6.18D). The subjective corneal haze grading showed a maximum with mean grading of 0.92 at 2 months and a gradual decrease to 0.14 at 24 months after PRK. The degree of haze was statistically greater with higher amount of correction(p<0.05). No difference was found related to age and sex(p>0.05). Clinically significant corneal haze and scarring was frequent in higher myopia group(p<0.05). Individual variation in corneal haze after PRK was found. However, high myopia is a risk factor of the corneal haze following PRK, and further study to decrease the corneal haze after PRK is necessary.

Keyword

Age; Amount of treatment; Corneal haze; Excimer laser photo-refractive keratectomy; Sex

MeSH Terms

Cicatrix
Follow-Up Studies
Lasers, Excimer*
Myopia*
Photorefractive Keratectomy*
Prospective Studies
Risk Factors