Evaluation of the German Version of a Validated Keratoconus Questionaire

Keratoconus, which results in thinning of the cornea, affects mainly young patients. The causes are currently only partially known. The aim of this study is the evaluation of a keratoconus questionnaire in German. Until now this questionnaire is only in use in English.

Within the study patients will be asked to fill out a questionnaire. The questionnaire deals with issues that are influenced by keratoconus: Visual impairment and its impact on quality of life. This questionnaire (KORQ) is an already validated questionnaire in English. Within this study we would like to translate the questionnaire and validate it in German.

Within this study 50 patients will be included for the validation of the questionnaire. Based on previous studies evaluating the Keratoconus Questionnaire (KORQ) in other languages, a number of 50 patients has been shown to be sufficient for validation.

No control examination is necessary for this study.

Completed

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Key information

Conditions

Keratoconus, Unspecified, Bilateral Corneal Diseases Eye Diseases Keratoconus

Age range

18 year–105 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Kepler University Klinik

Linz, Upper Austria, 4020, Austria

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Keratoconus
Signing of a written consent form for participation in the study

Exclusion criteria

Difficulty in understanding patient information

Treatment and study plan

Questionnaire

Other

the patients are asked to fill in a questionnaire

Primary outcomes

Validation of Keratoconus Outcome Research Questionnaire (KORQ)

Time frame: at screening visit

validation of a questionnaire in german language

Sponsors and collaborators

Lead sponsor

Johannes Kepler University of Linz

Other

Registry information

Acronym: KORQ

Important dates

Study start: 2022
Primary completion: 2023
Study completion: 2023
First posted: Oct 7, 2022
Registry last updated: Mar 6, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed