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

22. Januar 2021 aktualisiert von: Zhongshan Ophthalmic Center, Sun Yat-sen University
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.

Studienübersicht

Status

Unbekannt

Intervention / Behandlung

Detaillierte Beschreibung

Glaucoma is the leading cause of irreversible blindness in the world. It is estimated that by 2040, the number of glaucoma patients in the world's population aged 40-80 will exceed 110 million [1]. As a chronic progressive blindness disease, glaucoma can seriously damage visual function such as visual acuity, visual field and contrast sensitivity, restrict patients' daily life activities and leads to a serious decline in vision-related quality of life (VRQOL) and health-related quality of life (HRQOL) [2-5]. Comprehensive evaluation of the visual function of glaucoma patients can not only educate the impact of glaucoma, but also reflect the effect of clinical treatment or rehabilitation interventions. However, the objective testing methods commonly used in clinic, such as visual acuity, visual field and contrast sensitivity, can only be used to evaluate part of the visual function of patients, which can not reflect the impact of disease and corresponding interventions from the point of view of patients. The use of patient defined measures of vision function in ophthalmic assessment and treatment evaluation is now well accepted and a number of questionnaires have been developed, such as NEI VFQ-25, LVQOL and SF-36, which mostly focus on investigating VRQOL or HRQOL[6-10]. There are comparatively few vision function questionnaires developed to measure the visual ability for glaucoma patients. 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.

The GVFQ-40 consists of 40 items and measures the impact of glaucoma on restriction of participation in daily activities in five domains of functioning (mobility, visual tracking, reading, identification and night vision ). Each item has six answer options, that is, no difficulty (score = 1), mild difficulty (score = 2), moderate difficulty (score = 3), extremely difficult (score = 4), completely unable to complete (score = 5), and do not performed for nonvisual reasons (no score).

Studientyp

Beobachtungs

Einschreibung (Voraussichtlich)

400

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienorte

    • Guangdong
      • Guangzhou, Guangdong, China, 510060
        • Zhongshan Ophthalmic Center, Sun Yat-sen University

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

18 Jahre bis 80 Jahre (Erwachsene, Älterer Erwachsener)

Akzeptiert gesunde Freiwillige

Ja

Studienberechtigte Geschlechter

Alle

Probenahmeverfahren

Wahrscheinlichkeitsstichprobe

Studienpopulation

  1. Primary glaucoma: patients with primary glaucoma diagnosed by glaucoma professionals
  2. Glaucoma Suspect Controls: glaucoma suspect controls had a diagnosis of glaucoma suspect or ocular hypertension, and also were required to have a presenting Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity of 20/40 or better in both eyes.

Beschreibung

Inclusion Criteria:

1.1 Inclusion criteria of primary glaucoma group:

  1. age ≥ 18 years old;
  2. being able to express clearly and cooperate with the investigators;
  3. diagnosed with primary glaucoma;
  4. complete clinical data.

1.2 Inclusion criteria of glaucoma suspect controls:

  1. age ≥ 18 years old;
  2. being able to express clearly and cooperate with the investigators;
  3. diagnosed with glaucoma suspect or ocular hypertension;
  4. having a presenting Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity of 20/40 or better in both eyes;
  5. complete clinical data.

Exclusion Criteria:

1.1 Exclusion criteria for primary glaucoma group:

  1. serious cognitive dysfunction, psychological dysfunction, or hearing impairment;
  2. physical motor dysfunction, hyperthyroidism or hypothyroidism, malignant tumors and other serious systemic diseases;
  3. complicated with other ophthalmopathy affecting visual function (except cataract, ametropia), such as age-related macular degeneration, diabetic retinopathy, optic nerve disease, retinal vascular disease, etc;
  4. surgical intervention (incisional or laser) within 2 weeks of the date of completing questionnaires (before or after);
  5. not complete the questionnaire.

1.2 Exclusion criteria for glaucoma suspect controls:

  1. serious cognitive dysfunction, psychological dysfunction, or hearing impairment;
  2. physical motor dysfunction, hyperthyroidism or hypothyroidism, malignant tumors and other serious systemic diseases;
  3. complicated with other ophthalmopathy affecting visual function (except cataract, ametropia), such as age-related macular degeneration, diabetic retinopathy, optic nerve disease, retinal vascular disease, etc;
  4. not complete the questionnaire.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

Kohorten und Interventionen

Gruppe / Kohorte
Intervention / Behandlung
Primary Glaucoma
Patients with primary glaucoma diagnosed by glaucoma professionals
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.
Glaucoma Suspect Controls
Glaucoma suspect controls had a diagnosis of glaucoma suspect or ocular hypertension, and also were required to have a presenting Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity of 20/40 or better in both eyes.
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.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
GVFQ-40
Zeitfenster: 1 day (Only once)
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. The GVFQ-40 is administered by a trained interviewer to all enrolled participants. A subset of participants (35 subjects) will complete the GVFQ-40 twice 2 to 3 weeks apart.
1 day (Only once)

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Diagnosis and treatment information of ophthalmopathy
Zeitfenster: 1 day (Only once)
The diagnosis and treatment information of ophthalmopathy, such as disease diagnosis name, time, history of drug treatment and history of operation, were obtained from the hospital electronic medical record system or outpatient medical record data.
1 day (Only once)
NEI VFQ-25
Zeitfenster: 1 day (Only once)
The National Eye Institute-Visual Function Questionnaire-25 (NEI VFQ-25) is a valid and reliable VRQOL questionnaire designed for persons who have chronic eye diseases or low vision.
1 day (Only once)
ETDRS visual acuity
Zeitfenster: 1 day (Only once)
The information of ETDRS visual acuity was obtained from the hospital electronic medical record system or outpatient medical record data.
1 day (Only once)
Intraocular pressure
Zeitfenster: 1 day (Only once)
The information of intraocular pressure was obtained from the hospital electronic medical record system or outpatient medical record data.
1 day (Only once)
Automatic perimetry report
Zeitfenster: 1 day (Only once)
Automatic perimetry reports were obtained from the hospital electronic medical record system or outpatient medical record data.
1 day (Only once)
Kontrastempfindlichkeit nach Pelli-Robson
Zeitfenster: 1 Tag (Nur einmal)
Es wurde eine Pelli-Robson-Kontrastempfindlichkeitstestkarte verwendet.
1 Tag (Nur einmal)

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Publikationen und hilfreiche Links

Die Bereitstellung dieser Publikationen erfolgt freiwillig durch die für die Eingabe von Informationen über die Studie verantwortliche Person. Diese können sich auf alles beziehen, was mit dem Studium zu tun hat.

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

8. September 2020

Primärer Abschluss (Voraussichtlich)

30. April 2021

Studienabschluss (Voraussichtlich)

30. Mai 2021

Studienanmeldedaten

Zuerst eingereicht

21. Januar 2021

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

22. Januar 2021

Zuerst gepostet (Tatsächlich)

25. Januar 2021

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

25. Januar 2021

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

22. Januar 2021

Zuletzt verifiziert

1. Januar 2021

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • 2020KYPJ186

Plan für individuelle Teilnehmerdaten (IPD)

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NEIN

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

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