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Development of the Glaucoma Visual Functioning Questionnaire-40 and Its Psychometric Properties

NCT04722861 · Status: UNKNOWN · Type: OBSERVATIONAL · Enrollment: 400

Last updated 2021-01-25

No results posted yet for this study

Summary

The objective of this study is to develop and test the psychometric properties of a self-report questionaire, the Glaucoma Visual Functioning Questionnaire-40 (GVFQ-40), which was designed to measure the difficulty of daily activities of glaucoma patients and evaluate the effectiveness of clinical treatment or rehabilitation interventions.

Conditions

  • Primary Glaucoma
  • Glaucoma Suspect

Interventions

OTHER

GVFQ-40

GVFQ-40 is a 40-item questionnaire developed to evaluate the visual ability of glaucoma patients in detail. It consists of 40 items and measures the impact of glaucoma on restriction of participation in daily activities in five domains of functioning. Each item is rated on a five-level scale from ''no difficulty'' to ''can't do because of vision''. Another possible response is that the activity is not performed for nonvisual reasons.

Sponsors & Collaborators

  • Zhongshan Ophthalmic Center, Sun Yat-sen University

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2020-09-08
Primary Completion
2021-04-30
Completion
2021-05-30

Countries

  • China

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04722861 on ClinicalTrials.gov