Related Experiment Video
Updated: Jul 9, 2026
Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile
Published on: September 20, 2024
Phototherapeutic keratectomy to eliminate postoperative interface sheen in hyperopic LASIK
Millicent Grim1, Rachelle Pablo
1Gulf Eye Center, Dubai, United Arab Emirates. eyedoc@emirates.net.ae
Purpose:
To evaluate the effect of minimal phototherapeutic keratectomy (PTK) during primary hyperopic LASIK to eliminate or minimize interface sheen.
Methods:
Forty-two eyes of 21 consecutive hyperopic patients underwent LASIK using the NIDEK EC-5000 CX excimer laser. Mean spherical hyperopia was +3.05 +/- 1.41 diopters (D) (range: +0.75 to +5.75 D); mean cylinder was -0.88 +/- 0.89 D (range: -0.25 to -2.25 D). Mean manifest refraction spherical equivalent was +2.70 +/- 1.17 D (range: +0.75 to +5.00 D). Twenty-eight eyes received PTK after the refractive ablation whereas 14 eyes did not. The presence or absence of interface sheen was noted using slit-lamp microscopy.
Results:
One (3.5%) eye in the group that received PTK ablation had sheen whereas 27 (89%) eyes did not. A greater number of cases with sheen occurred in the group that did not receive PTK (12 eyes).
Conclusions:
Our experience shows that the delivery of minimal PTK without a masking agent tends to reduce the incidence of sheen after hyperopic LASIK.
