Abstract
Purpose: To translate the original 28-item Impact of Vision Impairment Profile into Turkish and to investigate its validity and reliability. Methods: Patients with no limitations to respond and affected by a chronic eye disease including retinitis pigmentosa (RP), age-related macular degeneration (ARMD) and diabetic macular edema which cause low vision were enrolled. The Turkish version of the IVI test was administered to all participants. The linguistic translation followed the international guidelines of forward and backward translation. 256 subjects who had a Snellen visual acuity of 6/12 or worse in the eye with best corrected visual acuity (BCVA) completed the Turkish version of the IVI-28 item. Psychometric evaluation of the Turkish IVI test involved the assessment of internal consistency, test-retest reliability, convergent and known-groups validity. Results: The mean (±SD) age of the participants was 53.67 ± 17.22 years. There were 256 patients with one of the following conditions: 105 RP (41%), 77 ARMD (30%), 74 DME (29%). Patients with lower visual acuity (VA) had lower index scores than those with higher VA (p = 0.001), which showed a sufficient responsiveness. Conclusion: Statistical analysis showed that Turkish version of the IVI-28 item is a valid and reliable instrument to measure vision-related quality of life (VRQoL) in patients with low vision.
Highlights
The Turkish version of the Impact of Vision Impairment (IVI) test was administered to all participants
Statistical analysis showed that Turkish version of the IVI-28 item is a valid and reliable instrument to measure vision-related quality of life (VRQoL) in patients with low vision
Retinitis pigmentosa (RP) is severe retinal neurodegeneration characterized with progressive loss of photoreceptors that leads to initial night blindness, consecutive tunnel vision and eventual total blindness [8]
Summary
Patient-centered quality of life instruments and studies which allow prioritizing the perception of the patients while supplying the health services, has drawn attention in ophthalmology as well as other disciplines. It is important that the instruments should be developed sensitively to the various cultural settings in which it is applied. Validiation of the tests is an important aspect of the assessments. There is no available psychometrically valid Turkish language VRQoL measure up to date and very few studies have assessed the impact of low vision in daily life of Turkish population
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
