AI Article Synopsis
- A new functional ability measurement tool, the faVIQ, was developed to better assess visual-related difficulties in patients with visual impairments.
- The tool was created using modern statistical methods and refined through input from healthcare professionals and visually impaired groups, ultimately resulting in 27 effective items.
- The faVIQ demonstrated strong ability to differentiate between visually impaired individuals and those without eye conditions, indicating it will be useful for evaluating low vision rehabilitation services.
Article Abstract
Aim: To develop a short, enhanced functional ability Quality of Vision (faVIQ) instrument based on previous questionnaires employing comprehensive modern statistical techniques to ensure the use of an appropriate response scale, items and scoring of the visual related difficulties experienced by patients with visual impairment.
Methods: Items in current quality-of-life questionnaires for the visually impaired were refined by a multi-professional group and visually impaired focus groups. The resulting 76 items were completed by 293 visually impaired patients with stable vision on two occasions separated by a month. The faVIQ scores of 75 patients with no ocular pathology were compared to 75 age and gender matched patients with visual impairment.
Results: Rasch analysis reduced the faVIQ items to 27. Correlation to standard visual metrics was moderate (r=0.32-0.46) and to the NEI-VFQ was 0.48. The faVIQ was able to clearly discriminate between age and gender matched populations with no ocular pathology and visual impairment with an index of 0.983 and 95% sensitivity and 95% specificity using a cut off of 29.
Conclusion: The faVIQ allows sensitive assessment of quality-of-life in the visually impaired and should support studies which evaluate the effectiveness of low vision rehabilitation services.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3949463 | PMC |
| http://dx.doi.org/10.3980/j.issn.2222-3959.2014.01.14 | DOI Listing |
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