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Seasonal variations in refractive results following excimer laser photorefractive keratectomy.

PURPOSE
To evaluate the effect of seasonal factors on the final refractive outcome following excimer laser photorefractive keratectomy (PRK).


METHODS
We examined the final refractive outcome for 5367 patients who had undergone PRK and photoastigmatic refractive keratectomy (PARK) over an 18-month period, April 1994 to August 1995, with a Nidek EC-5000 excimer laser and analyzed them by monthly and seasonal groups at time of treatment.


RESULTS
We were unable to demonstrate any significant difference in patients grouped according to season at time of treatment.


CONCLUSION
We would not recommend any seasonal-related adjustment for treatment with the Nidek EC-5000 excimer laser.