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Bongjoon Choi; Successful Treatment with Combined PRK/PTK Smoothing for the Treatment of Severe Corneal Haze after Surface Ablation. Invest. Ophthalmol. Vis. Sci. 2016;57(12):4841.
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© ARVO (1962-2015); The Authors (2016-present)
The surface irregularity is known as important cause of the corneal haze after eximer laser surface ablation . We evaluated the clinical effects of PRK and PTK smoothing for treatment of severe corneal haze after surface ablation
We retrospectively reviewed the medical records of 10 eyes of 6 patients who had undergone gentle removal of corneal haze, PRK and PTK smoothing for the treatment of severe corneal haze after surface ablation.Corneal epithelium was removed with 20% alcohol instillation for 50 seconds. Subepithelial haze was debrided softly and half of the refractive error was corrected with PRK mode. Then PTK smoothing was performed with slit scanning excimer laser using masking fluid(0.3% HA) until the rough corneal surface was smooth. At the end of the surgery, the 0.02% mitomycin C was applied
The mean corneal haze score was 3.1 grade. Mean PRK correction was -1.6D and PTK depth was 41.4 μm(about 10 μm real depth).Mean mitomycin C application time was 85 seconds. All of the eyes had clear cornea and uncorrected visual acuity of more than 20/20 1 year after surgery. The manifest refraction was within 1 diopter from emmetropia in all eyes.
Combined PRK and PTK smoothing was effective for treatment of severe corneal haze after surface ablation. and we can prevent the recurrence of corneal haze and reduce the mitomycin C application time .
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.
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