Influence of Trabeculectomy and Phaco-trabeculectomy on Corneal Astigmatism

University of Zurich150 enrolled

Overview

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

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.

Study Type

INTERVENTIONAL

Allocation

Purpose

TREATMENT

Masking

NONE

Enrollment

150

Conditions

Astigmatism Glaucoma

Interventions

BiometryDEVICE

All patients undergo all three examinations (biometry, refraction and corneal topography) 6 months after surgery

RefractionDEVICE

All patients undergo all three examinations (biometry, refraction and corneal topography) 6 months after surgery

Corneal TopographyDEVICE

All patients undergo all three examinations (biometry, refraction and corneal topography) 6 months after surgery

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Trabeculectomy or Phaco-Trabeculectomy between 01/2017 and 12/2017 * Age ≥18 years Exclusion Criteria: * Acute or chronic corneal diseases

Outcomes

Primary Outcomes

Difference in Astigmatism [Diopters (dpt)]

Time frame: preoperative astigmatism compared to 6 months postoperatively

Data from ClinicalTrials.gov

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