Instrument Variable Name: AVISDEV
Questionnaire File Name: Sample Adult
Do you use any adaptive devices such as telescopic or other prescriptive lenses, magnifiers, large print or talking materials, CCTV, white cane, or guide dog?
9 Don't know
Universe Text: Sample adults 18+ who have trouble seeing
(1 2,R,D) and if ABLIND = 2,R,D then [goto AVDF_NWS];
else (1,2,R,D) and ABLIND=1 [goto AVISEXAM]