We describe the development and content validation of the revised Self-Report Assessment of Functional Visual Performance (R-SRAFVP).METHOD.
The content validation process consisted of three stages: (1) three occupational therapy experts in low vision rehabilitation revised items on the 38-item SRAFVP via written feedback and semistructured interview, (2) eight occupational therapy low vision experts evaluated items for relevance and provided feedback on the rating scale, and (3) five adults with low vision provided feedback on item clarity via cognitive interviewing.RESULTS.
In Stage 1 review, 21 items were added, totaling 59 items. In Stage 2 evaluation, 9 items were eliminated, resulting in the 50-item R-SRAFVP with a 4-point scale. The scale content validity index of the R-SRAFVP was .9. Stage 3 cognitive interviewing provided no substantive changes in content.CONCLUSION.
R-SRAFVP content was relevant to evaluate the ability of adults with low vision to complete vision-dependent daily tasks and was understandable by these participants.
The R-SRAFVP was shown to be relevant to the evaluation of the ability of adults with low vision to complete vision-dependent ADLs.