This article is more than 5 years old. Information may no longer be current.
Combination of PRK, cross-linking may be feasible for low refractive errors in select ectatic eyes
Click Here to Manage Email Alerts
 Vikentia Katsanevaki |
VIENNA, Austria — A combination of corneal collagen cross-linking with PRK may offer a reasonable approach for the correction of low refractive errors in strictly selected ectatic eyes, according to one surgeon.
"We treated 25 eyes of 16 patients with myopic or mixed astigmatism between -1 D and -3.75 D. Mean age was 28 years, ranging between 18 and 36 years. All corrections aimed to plano, ablation depth did not exceed 60 µm, and we included only patients with an expected corneal thickness of more than 400 µm following laser ablation," Vikentia Katsanevaki, MD, said at the European Society of Cataract and Refractive Surgeons meeting here.
The refractive procedure, performed with the WaveLight Allegretto (Alcon), was followed by mitomycin C application for 12 seconds and cross-linking according to the classic Dresden protocol.
The achieved correction was within 0.5 D of plano and was stable at 1 year in all eyes. The efficacy ratio was 0.87, and 90% of eyes had uncorrected visual acuity within one line of best corrected visual acuity.
Because the effects of laser ablation on the biomechanics of keratoconus corneas are still largely unknown, Dr. Katsanevaki said that this procedure is a tool that can be used in corneas of sufficient thickness and only for a low range of attempted correction.
- Disclosure: Dr. Katsanevaki has no relevant financial disclosures.