Photorefractive treatment of myopic astigmatism by laser-assisted in situ Keratomileusis and Photorefractive Keratectomy

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Ahmed Mohammed Al-Samak
Sajid Yousef Shehab


myopic astigmatism;, laser-assisted in situ keratomileusis (LASIK);, photorefractive keratectomy (PRK)


Aim: To compare the refractive correction among patients with myopic astigmatism either by laser-assisted
in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK) after 6 months.
Methods: Comparative retrospective study of 356 eyes of 196 patients were treated by laser photorefractive
correction at AL BASIRA eye Centre, Basra, Iraq to correct their refractive error with a mean age of 26.8
years (range: 18–45). Of those, 213 eyes were treated by LASIK and 143 eyes were treated by PRK. The
correction of a refractive error was done by Carl Zeiss Mel 90 machine and all operations were done by two
surgeons. The study period lasted from October 2017 to October 2019.
Results: All patients were followed for a period of 6 months, assessed their refractive correction, and found
all values to be statistically significant (P < 0.001). The refractive correction was better for the PRK group
with less undesirable effect of under correction or overcorrection.
Conclusions: Our study shows relatively superior refractive correction in patients undergoing PRK.
However, many patients suffer from postoperative pain and gradual refractive stability.

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