Posters

Simultaneous partial topo-guided photorefractive keratectomy followed by corneal collagen cross-linking for keratoconus

Poster Details

First Author: A.Silva PORTUGAL

Co Author(s):    R. Pinheiro   J. Gil   A. Rosa   C. Tavares   M. Quadrado   J. Neto-Murta     

Abstract Details

Purpose:

To evaluate the visual outcome expressed by the logarithm of the minimum angle of resolution (logMAR), refractive status and changes in corneal curvature following simultaneous topography-guided photorefractive keratectomy (PRK) followed by corneal collagen cross-linking (CXL) for the treatment of keratoconus.

Setting:

Single-center, retrospective clinical study.

Methods:

Patients diagnosed with keratoconus underwent simultaneous, same-day, partial topography-guided photorefractive keratectomy (t-PRK) and corneal collagen cross-linking (CXL). The best spectacle corrected visual acuity (BSCVA), refractive correction and corneal topography were reviewed.

Results:

We included 97 eyes from 97 patients. Mean follow-up was 13±8 months. Preoperatively, average BSCVA was 0.44±0.25 LogMAR and improved significantly to 0.27±0.28 logMAR (P=0.001). Flat and steep keratometry were, respectively, 46.25±4.3 and 50.79±4.14 D. Steep keratometry significantly flattened to 48.85±4.40 D (P=0.001) while flat keratometry readings were 45.77±3.75 D (P=0.42). Mean steepest K reading decreased from 54.81±4.96 D to 52.99±5.05 D (P=0.51). Mean spherical equivalent changed from -2.60±2.34 to -3.72±2.89 D (P=0.013) while refractive cylinder diminished from -2.99±2.40 to 2.16±1.62 D (P=0.059).

Conclusions:

Combined simultaneous topo-guided PRK and CXL appears to be an effective option in the treatment of patients with keratoconus. It leads to corneal regularization, improves the corneal contour, reduces irregular astigmatism and markedly improves quality of vision. .

Financial Disclosure:

None