Purpose: To provide calibrated item measures and rating category thresholds for the Activity
Inventory (AI), an adaptive visual function questionnaire, from difficulty ratings obtained from …

Purpose. The Activity Inventory (AI) is an adaptive visual function questionnaire that consists
of 459 Tasks nested under 50 Goals that in turn are nested under three Objectives. Visually …

Purpose This article presents a theoretical interpretation of patient-reported outcomes of low-
vision rehabilitation (LVR) using rating scale questionnaires and uses previously published …

Purpose This study is an evaluation of the responsiveness of preference-based outcome
measures to the effects of low vision rehabilitation (LVR). It assesses LVR-related changes …

purpose. To evaluate the sensitivity to change, in patients who undergo vision rehabilitation,
of the Veteran Affairs (VA) Low Vision Visual Functioning Questionnaire (LV VFQ-48), which …

Purpose In the past, rehabilitation centers for the visually impaired used unstructured or
semistructured methods to assess rehabilitation needs of their patients. Recently, an …

Purpose. To assess the relative importance of several measurement facets including
respondent (patient or clinicians), item (functional domains), and administration (pre-and …

Objective To present a method of estimating and equating scales across functional
assessment instruments that appropriately represents changes in a patient's functional …

This study aims to further develop the Impact of Vision Impairment (IVI) profile into a
practical, valid instrument for use in low vision rehabilitation. The IVI item pool was derived …

Purpose To investigate the longitudinal outcomes of rehabilitation (from baseline to 4 and 12
months) at a multidisciplinary rehabilitation center. The three goals (“Reading,”“Writing,” and …