%0 Journal Article
%T Photorefractive Keratectomy with Adjunctive Mitomycin C for Residual Error after Laser-Assisted In Situ Keratomileusis Using the Pulzar 213£¿nm Solid-State Laser: Early Results
%A Maya Fe Ng-Darjuan
%A Raymond P. Evangelista
%A Archimedes Lee D. Agahan
%J ISRN Ophthalmology
%D 2013
%R 10.1155/2013/815840
%X Purpose. To evaluate the accuracy, efficacy, stability, and safety of photorefractive keratectomy (PRK) enhancement using the Pulzar 213£¿nm solid-state laser (SSL) with adjunctive Mitomycin C in eyes previously treated with laser assisted in situ keratomileusis (LASIK) with residual error of refraction. Methods. This is a prospective noncomparative case series of 16 eyes of 12 patients who underwent PRK for residual refractive error after primary LASIK. Mitomycin C 0.02% was used after the PRK to prevent haze formation. Outcomes measured were pre- and postoperative manifest refraction spherical equivalent (MRSE), uncorrected (UDVA) and best-corrected distance visual acuity (CDVA), and slit lamp evidence of corneal complications. Results. The mean UDVA improved from 20/70 preoperatively to 20/30 postoperatively. The average gain in lines for the UDVA was 2.38. After six months of followup, the postoperative MRSE within 0.50£¿D in 56% (9) of eyes and 94% (15) eyes were within 1.0 diopters of the intended correction. No eyes developed haze all throughout the study. Conclusion. PRK enhancement with adjunctive use of Mitomycin C for the correction of residual error of refraction after LASIK using the Pulzar 213£¿nm solid-state laser is an accurate, effective, and safe procedure. 1. Introduction Laser eye surgery has been accepted worldwide as a procedure to modify the shape of the cornea and correct myopia, hyperopia, astigmatism, and presbyopia. However, the cornea is not a plastic material that if shaped a certain way would retain that shape forever. The cornea is a living tissue wherein its biomechanical and wound healing properties can restrict the predictability and stability of refractive surgery [1]. These factors contribute to the discrepancies between intended and achieved visual outcomes after laser-assisted in situ keratomileusis (LASIK), surface ablation, and other keratorefractive procedures leading to residual errors. To correct the remaining refractive error, a second refractive laser surgery can be done. In this study, we chose to do photorefractive keratectomy (PRK) with adjunctive Mitomycin C using the 213£¿nm solid-state laser for the correction of residual error after LASIK. Photorefractive keratectomy (PRK) with adjunctive Mitomycin C has been shown to be safe and effective with the use of the 193£¿nm excimer lasers. These lasers have been widely used in the past two decades and up to the present [2¨C4]. With the recent development and introduction of the 213£¿nm solid-state laser, use of this machine for refractive surgery has been increasing
%U http://www.hindawi.com/journals/isrn.ophthalmology/2013/815840/