Abstract:
PURPOSE:To determine if superficial lamellar corneal excision with femtosecond laser followed by phototherapeutic keratectomy (PTK) using a masking substance improves visual acuity and optical quality of patients with severe corneal opacities. METHODS:Twelve eyes with corneal haze or scarring underwent confocal microscopy to estimate the opacities' thickness and calculate the excision depth. Femtosecond laser was then used to create a superficial corneal flap. PTK and smoothening with masking substance (0.25% sodium hyaluronate) were done to improve corneal regularity and decrease corneal scarring. Follow-up was performed at 1, 6, and 12 months. RESULTS:Mean logarithm of the minimum angle of resolution of best spectacle-corrected visual acuity improved from 0.62 (mean decimal 0.26) to 0.30 (mean decimal 0.58) at 1 year (P = 0.035). Haze grades improved significantly. Coma-like aberration decreased postoperatively. CONCLUSIONS:Results showed that superficial corneal excision with femtosecond laser augmented with PTK laser smoothening assisted with 0.25% sodium hyaluronate improved visual acuity and could be considered as an alternative to more invasive procedures in patients with severe corneal opacities.
journal_name
Corneajournal_title
Corneaauthors
Alió JL,Agdeppa MC,Uceda-Montanes Adoi
10.1097/ICO.0b013e3181eeb0c1subject
Has Abstractpub_date
2011-03-01 00:00:00pages
301-7issue
3eissn
0277-3740issn
1536-4798journal_volume
30pub_type
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