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Transepithelial PRK may be feasible option in myopic patients with thin corneas
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PARIS — One-step transepithelial PRK with mitomycin is a good alternative to phakic IOLs in myopic patients with thin corneas, according to one surgeon speaking at the meeting of the French Society of Ophthalmology.
“It is an easy, quick, reliable and reproducible procedure that can be optimized or customized to each patient,” Nicolas Mesplie, MD, said.
Nicolas Mesplie
He presented the results of this technique in 46 patients with corneal thickness below 500 µm or borderline corneas, myopia between –2 D and –9 D, and myopic astigmatism from 0 D to –4 D. Patient age was between 20 years and 58 years. An aberration-free treatment was performed, with optical zones between 6.3 mm and 7.2 mm. The follow-up was 3 months.
“We had very good results, with 88% of the patients achieving 20/20 postop and 91% achieving 20/25. Two eyes (2.2%) lost one line of BCVA at 3 months due to haze but regained it within the following year. Nine eyes (9.8%) gained one line,” Mesplie said.
In 82% of the eyes, refraction was within 0.25 D of intended correction or +0.24 D hyperopic shift. A slight tendency for hyperopic overcorrection was noted, particularly in eyes with more than –6 D of preoperative spherical equivalent. Caution must therefore be used when treating presbyopic patients, Mesplie said.
“This hyperopic shift was not found in other case series and might be due to our inclusion of borderline risk corneas,” he said. “Otherwise, our results were comparable to conventional PRK or LASIK in high myopia, with no increased incidence of haze.” – by Michela Cimberle
Reference:
Mesplie P. Results on myopic patients of trans PRK with mitomycin. Presented at: Meeting of the French Society of Ophthalmology; May 7-10, 2016; Paris.
Disclosure: Mesplie reports no relevant financial disclosures.