The purpose of this study is to evaluate the visual results of patients with keratoconus treated with one of two techniques: penetrating keratoplasty (PK) vs. pachymetry and Excimer laser assisted lamellar keratoplasty (PALK).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
28
Conventional Penetrating keratoplasty technique
Ablation profile focusing on topography and pachymetry with Schwind Amaris excimer laser
Fluoroquinolone topical antibiotic (Moxifloxacin, Vigamox) and topical steroid (Prednisolone Acetate Ophthalmic Suspension, Pred Forte)
Visual acuity
Uncorrected and corrected distance visual acuity
Time frame: 6 months
Corneal measurements: pachymetry
Evaluation of the pachymetric maps with a Scheimpflug-Placido device (Sirius). Measurement in microns
Time frame: 6 months
Corneal aberrometry: Coma, spherical aberration and trefoil
Evaluation of the corneal aberrations including coma, spherical aberration and trefoil, with a Scheimpflug-Placido device (Sirius)
Time frame: 6 months
Corneal measurements: anterior and posterior elevation
Evaluation of the elevation (anterior and posterior), maps with a Scheimpflug-Placido device (Sirius). Measurement in diopters
Time frame: 6 months
Corneal measurements: keratometries.
Evaluation of the keratometric map with a Scheimpflug-Placido device (Sirius). Measurement in diopters
Time frame: 6 months
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