Photorefractive keratectomy in high myopic defects with or without intraoperative mitomycin C: 1-year results.
Eur J Ophthalmol
; 16(2): 229-34, 2006.
Article
in En
| MEDLINE
| ID: mdl-16703539
ABSTRACT
PURPOSE:
To study the results of the prophylactic use of mitomycin C (MMC) to reduce haze formation and refractive regression after excimer laser photorefractive keratectomy (PRK) for high myopic defects (>5 diopters).METHODS:
Prospective, consecutive, observational study. A total of 124 eyes of 62 patients were divided into two groups of 31 patients, 62 eyes each (Groups A and B). Only Group A was treated with MMC 0.02%. The data of the two groups of eyes, related to the best-corrected visual acuity (BCVA), to the difference of refraction pre- and post-treatment, and to the corneal haze, were analyzed through combined permutation tests by using the NPC Test software .RESULTS:
BCVA of Group A, 1 year after treatment, was better than that of the control Group B (one-sided p value = 0.013) Group A - 3 eyes (4.8%) had a loss of a decimal fraction and no eyes > 1; Group B - 13 eyes (20.9%) had a loss of a decimal fraction and 1 eye (1.6%) of 2. There was a smaller difference between attempted and achieved SE correction in Group A with respect to Group B (one-sided p value = 0.068) Group A - 43 eyes (69.3%) within +/- 0.50 D; Group B - 31 eyes (50%) within +/- 0.50 D. there was a smaller incidence of corneal haze in the group for which MMC was used (one-sided p value = 0.005).CONCLUSIONS:
In this study, the application of MMC 0.02% solution immediately after PRK produced lower haze rates and had better predictability and improved efficacy 1 year after treatment.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Mitomycin
/
Photorefractive Keratectomy
/
Antibiotics, Antineoplastic
/
Myopia
Type of study:
Clinical_trials
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Eur J Ophthalmol
Year:
2006
Document type:
Article