Results of Phototherapeutic Keratectomy in the Management of Flap Striae after LASIK before and after Developing a Standardized Protocol
2007; Elsevier BV; Volume: 114; Issue: 6 Linguagem: Inglês
10.1016/j.ophtha.2006.09.023
ISSN1549-4713
AutoresAmin Ashrafzadeh, Roger F. Steinert,
Tópico(s)Ocular Surface and Contact Lens
ResumoObjectiveTo evaluate the efficacy and safety of phototherapeutic keratectomy (PTK) for treatment of striae in LASIK flaps.DesignRetrospective consecutive series.ParticipantsForty-seven eyes of 44 patients with flap striae after LASIK with reduced best-corrected visual acuity (VA) or visual symptoms with at least 3 months' follow-up (consecutive cases from January 2001 to May 2004).InterventionTransepithelial PTK.Main Outcome MeasuresUncorrected VA (UCVA), best spectacle-corrected VA (BSCVA), resolution or reduction of preoperative symptoms, and corneal haze.ResultsMean UCVA and BSCVA improved from 20/43 and 20/29 to 20/33 and 20/23, respectively. Five eyes (10%) developed 1+ haze and 14 eyes (30%) developed trace haze, generally peaking at 1 to 2 months postoperatively. No visual symptoms or loss of acuity were attributable to haze. A mean hyperopic shift of +0.80 diopters (D) occurred after PTK treatment. Development of a standardized protocol significantly reduced the variability of the refractive shift after PTK (P = 0.003). Results were stable in up to 2 years of follow-up.ConclusionsPhototherapeutic keratectomy treatment of LASIK flaps is well tolerated, with stable outcomes and minimal complications. A standardized treatment protocol reduced postoperative refractive variability.
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