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[Non-refractive complications of keratectomy with Excimer laser in 141 myopic eyes]
1Centre Hospitalier National d'Ophthalmologie des Quinze-Vingts, Paris.
Purpose:
The purpose of this study is to evaluate the safety of myopic photorefractive keratectomy and to study the frequency of complications, excepted refractive problems.
Methods:
A consecutive series of 170 eyes has been studied in a prospective trial low-up of one year for 107 eyes and six months for 34 eyes. Twenty-nine eyes have been lost.
Results:
The main complication after six months is the loss of the best spectacle-corrected visual acuity. It was due to a haze in seven eyes (loss of one line in five eyes and four lines in one eye) and to an excentric ablation in three eyes (one line in two eyes and two lines in one eye), results found for treatments of six diopters or more. The haze is a constant complication. A direct relationship between the haze's intensity and the treatment importance was found as was an inverse relationship between the patient's age and the haze's intensity. The excentric ablations have no influence on the final visual acuity when they concern less than one millimeter. The epithelial problems were always of less importance.
Conclusion:
Except in corrections greater than seven diopters, complications are uncommon after Excimer for myopia. Patient's information has to be rigorous.