A measure of handicap for low vision rehabilitation: the impact of vision impairment profile

Citation
Jb. Hassell et al., A measure of handicap for low vision rehabilitation: the impact of vision impairment profile, CLIN EXP OP, 28(3), 2000, pp. 156-161
Citations number
10
Categorie Soggetti
Optalmology
Journal title
CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY
ISSN journal
14426404 → ACNP
Volume
28
Issue
3
Year of publication
2000
Pages
156 - 161
Database
ISI
SICI code
1442-6404(200006)28:3<156:AMOHFL>2.0.ZU;2-O
Abstract
This study aims to further develop the Impact of Vision Impairment (IVI) pr ofile into a practical, valid instrument for use in low vision rehabilitati on. The IVI item pool was derived from focus groups of people with impaired vision, relevant content of existing quality of life questionnaires, and t he administration of two trial versions. The second trial version of IVI wa s administered to 256 people who were vision impaired. Items were deleted i f they were of little or no concern or were unable to be performed by most people, had moderate to high inter-item correlation, or did not contribute to a factor in the factor analysis. Two items were deleted due to floor and ceiling effects, 11 due to moderate to high inter-item correlation r great er than or equal to 0.6. None were removed as a result of factor analysis. The first three factors explained 59% of the variance. This reduced version of the IVI, a tool able to determine rehabilitation needs for people who a re vision impaired, will now undergo its final validation procedures.