Automated superficial lamellar keratectomy augmented by excimer laser masked PTK in the management of severe superficial corneal opacities.
OBJECTIVE
To assess superficial lamellar keratectomy augmented by excimer laser smoothening with sodium hyaluronate 0.25%, for the management of superficial corneal opacities.


METHODS
Consecutive procedure performed in 14 eyes (13 patients) with an automated microkeratome and excimer laser phototherapeutic keratectomy (PTK) smoothening using sodium hyaluronate 0.25%.


METHODS
UCVA, BCVA, pachymetry, degree of haze, ray tracing analysis, and complications. Mean follow up was 12 (SD 1.6) months.


RESULTS
Mean preoperative haze from previous corneal refractive surgeries was 3.5 (SD 0.5) (11/14 cases). In one case, opacity was caused by ocular trauma and in two by infectious keratitis. The mean preoperative UCVA was 0.7 logMAR (0.2 (SD 0.13) decimal value). BCVA was 0.4 logMAR (0.4 (SD 0.17) decimal value). Mean preoperative corneal pachymetry was 508 (SD 62.5) micro m and mean opacity depth measured by corneal confocal microscopy was 115.2 (SD 49.4) micro m. At 6 months, 71.4% of the eyes with previous corneal refractive surgery showed grade I haze or less. Mean postoperative corneal pachymetry at 6 months was 352.36 (SD 49.05) micro m.


CONCLUSIONS
Automated superficial lamellar keratectomy combined with excimer laser PTK smoothening assisted by sodium hyaluronate 0.25% induces a significant improvement of corneal transparency and visual acuity in cases of corneal opacity caused by previous refractive surgery, ocular trauma, and keratitis.
Alio
J L
JL
Instituto Oftalmológico de Alicante, Department of Cornea and Refractive Surgery, Alicante, Spain. jlalio@oftalio.com
Javaloy
J
J
Merayo
J
J
Galal
A
A
D000328:Adult; D000368:Aged; D003318:Corneal Opacity / Q000209:etiology / Q000601:surgery*; D019781:Corneal Topography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D054018:Lasers, Excimer; D008297:Male; D018613:Microscopy, Confocal; D008875:Middle Aged; D018903:Photorefractive Keratectomy / Q000379:methods*; D011183:Postoperative Complications; D012029:Refraction, Ocular; D012720:Severity of Illness Index; D016896:Treatment Outcome; D014792:Visual Acuity