Clinical Trial: Influence of Trabeculectomy and Phaco-trabeculectomy on Corneal Astigmatism

Study Status: Not yet recruiting
Recruit Status: Not yet recruiting
Study Type: Interventional

Official Title: Einfluss Der Trabekulektomie Und Der Kombinierten Phako-Trabekulektomie Auf Den Kornealen Astigmatismus

Brief Summary: This study investigates the effects of trabeculectomy and combined phacoemulsification plus trabeculectomy on corneal astigmatism.

Detailed Summary: Prospectively, consecutive patients at the University Hospital of Zurich undergoing either trabeculectomy (trab) or phaco-trabeculectomy (phaco-trab) are included in this study between January and December 2017. The study interventions takes place 6 months after surgery and include examination of refraction, biometry and corneal topography in order to assess the patient's astigmatism. The values are compared to the preoperative baseline values, which are available from patient records.
Sponsor: University of Zurich

Current Primary Outcome: Difference in Astigmatism [Diopters (dpt)] [ Time Frame: preoperative astigmatism compared to 6 months postoperatively ]

Original Primary Outcome: Difference in Astigmatism [dpt.] [ Time Frame: preoperative astigmatism compared to 6 months postoperatively ]

Current Secondary Outcome:

Original Secondary Outcome:

Information By: University of Zurich

Dates:
Date Received: October 20, 2016
Date Started: January 2017
Date Completion: February 2018
Last Updated: October 26, 2016
Last Verified: October 2016