Clinical Trial: Treatment of Keratoconus With PALK Versus PK

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

Official Title: Treatment of Keratoconus With Pachymetry Assisted Laser Keratoplasty (PALK) Versus Penetrating Keratoplasty (PK)

Brief Summary: 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).

Detailed Summary:
Sponsor: Instituto de Oftalmología Fundación Conde de Valenciana

Current Primary Outcome: Visual acuity [ Time Frame: 6 months ]

Uncorrected and corrected distance visual acuity


Original Primary Outcome: Same as current

Current Secondary Outcome:

  • Corneal measurements: pachymetry [ Time Frame: 6 months ]
    Evaluation of the pachymetric maps with a Scheimpflug-Placido device (Sirius). Measurement in microns
  • Corneal aberrometry: Coma, spherical aberration and trefoil [ Time Frame: 6 months ]
    Evaluation of the corneal aberrations including coma, spherical aberration and trefoil, with a Scheimpflug-Placido device (Sirius)
  • Corneal measurements: anterior and posterior elevation [ Time Frame: 6 months ]
    Evaluation of the elevation (anterior and posterior), maps with a Scheimpflug-Placido device (Sirius). Measurement in diopters
  • Corneal measurements: keratometries. [ Time Frame: 6 months ]
    Evaluation of the keratometric map with a Scheimpflug-Placido device (Sirius). Measurement in diopters


Original Secondary Outcome: Same as current

Information By: Instituto de Oftalmología Fundación Conde de Valenciana

Dates:
Date Received: December 1, 2015
Date Started: June 2013
Date Completion:
Last Updated: December 5, 2015
Last Verified: December 2015