Visual screening without the use of technical equipment: preliminary development of a behaviorally validated questionnaire

Abstract

The collection of epidemiological data pertaining to visual status usually requires individual testing and the use of technical equipment and trained personnel. To expedite such screening a self-report inventory, which validly predicted laboratory or clinical testing, but in a format suitable for group testing and administration by nontechnically trained staff, would be useful. This paper demonstrates the feasibility of such a screening technique. A preliminary inventory was validated against laboratory tests for acuity, color vision, and binocular function and was shown to be capable of ascertaining visual capacities and predicting visual deficits on these dimensions.

The Development of the LV Prasad-Functional Vision Questionnaire: A Measure of Functional Vision Performance of Visually Impaired Children

“…A second application for the LVP-FVQ is that it provides eye care professionals with a structured format for recording vision problems of children with visual impairment. Several investigators 39,40 have expressed similar views in their review of visual function assessment questionnaires in adults. Third, it could guide planning of appropriate interventions.…”

Development of the Ultra-Low Vision Visual Functioning Questionnaire (ULV-VFQ)

“…Generally, items were worded as: “How difficult is it to [do this activity] using your remaining vision?” We emphasized using only vision, without or with the use of visual assistive devices, such as a magnifier (see Supplementary Materials S1 for instructions and items). 52 The ordered difficulty ratings were similar to those used by Massof et al 36 during the development of the activity inventory and consisted of: not difficult, somewhat difficult, very difficult, impossible to perform visually, and not applicable. Items were uploaded to SurveyMonkey (SurveyMonkey, Inc., Palo Alto, CA, USA), which was then used by a research assistant for administration over the phone, or by the participant for online self-administration, according to preference.…”

Development of a questionnaire for measurement of vision-related quality of life

“…The development process has been carefully documented for several of these instruments. [18][19][20][21][22][23][24][25][26][27][28] In these articles it is not clear whether clients or patients were explicitly asked to define quality of life in relation to their vision. Therefore, the validity of these narrowly-focused instruments in relation to quality of life assessment is uncertain.…”