Turkish Version of the Glaucoma Quality of Life-15 Questionnaire

NCT03967145 | Completed

• 1 other identifier: ATADEK 2019-7/2
• Study Type: observational
• Target: 127
• Locations: 1 country
• Sites: 1

Brief Summary

Glaucoma is a disease with irreversible loss of visual field and optic neuropathy and is the most important cause of irreversible vision loss after cataract in the world. Although clinical evaluations reveal the level of glaucoma quantitatively, it is necessary to evaluate the impact of this pathology on daily functions and quality of life with a holistic perspective and to provide appropriate advice to patients according to the information obtained. Glaucoma Quality of Life -15 Questionnaire (GQoL-15) was developed by Nelson et al. in 2003 to evaluate the quality of life of glaucoma patients. The aim of this study is to translate GQoL-15 into Turkish and evaluate its test-retest reliability for Turkish-speaking population.

Conditions

Glaucoma; Quality of Life

Outcome Measures

Primary Outcomes (2)

• Glaucoma Quality of Life 15 Questionnaire total score

  GQoL-15 total score was got after calculate the all subscale values. Subscales are as; 1) Central and near vision (two questions); 2) Peripheral vision (six questions); 3) Dark adaptation (six questions); 4) Outdoor mobility (one question). The item responses for each factor are marked on a five-point scale (1 meaning no difficulty and 5 meaning severe difficulty), 0 is marked if the participant does not perform the activity because of non-visual causes. Higher GQL-15 total scores and subscale scores are reveals lower QoL.

  6 months

• 25-item National Eye Institute Visual Functioning Questionnaire (NEI-VFQ 25)

  NEI-VFQ 25 total score was got after calculate the all values. It is comprised of 25 items which are; general health and vision, ocular pain, difficulty with vision activities, distance-vision activities, limitation of social functioning, mental health problems, role limitations, dependency on others, driving difficulties, difficulty with color vision and difficulty with peripheral vision. A total score of NEI-VFQ 25 is generated by averaging the scores of all subscales except general health. The item responses for factors are marked on a five or six point scale. Subscale score can be calculated, overall total lower score indicates better vision-related QoL.

  6 months

Interventions

Determining quality of life BEHAVIORAL

Quality of Life

Eligibility Criteria

• Age: 20 Years - 60 Years
• Sex: all
• Age Groups: Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

Primary Open-Angle Glaucoma patients

You may qualify if:

• Diagnosis of primary open angle glaucoma more than 6 months with visual field tests,
• Have the sufficient cognitive level to answer the scale questions.

You may not qualify if:

• To have retinal or optic nerve pathologies that may cause loss of visual field or decrease in visual field except glaucoma,
• To undergo eye surgery in the last 3 months.

Sponsors & Collaborators

• Acibadem University: lead
• Haydarpasa Numune Training and Research Hospital: collaborator

Study Sites (1)

Yücel Öztürk

Istanbul, Turkey (Türkiye)

Location

MeSH Terms

Conditions

Glaucoma

Condition Hierarchy (Ancestors)

Ocular Hypertension; Eye Diseases

Study Officials

• Özgül Öztürk

  Acibadem University

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: CASE ONLY
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Study Record Dates

• First Submitted: May 27, 2019
• First Posted: May 30, 2019
• Study Start: May 27, 2019
• Primary Completion: March 1, 2020
• Study Completion: March 1, 2020
• Last Updated: April 8, 2020

Record last verified: 2020-04

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)