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Related Experiment Video

Updated: May 9, 2026

A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision
09:29

A Standardized Obstacle Course for Assessment of Visual Function in Ultra Low Vision and Artificial Vision

Published on: February 11, 2014

Generating clinical outputs for self-reports of visual functioning.

Craig A Velozo1, Mary Warren, Eric Hicks

  • 1North Florida/South Georgia Veterans Health System, Research Service, Department of Veterans Affairs Medical Center, College of Public Health and Health Professions, University of Florida, Gainesville, Florida, USA. velozo@musc.edu

Optometry and Vision Science : Official Publication of the American Academy of Optometry
|July 11, 2013
PubMed
Summary
This summary is machine-generated.

The Self-Report Assessment of Functional Vision Performance (SRAFVP) demonstrates good psychometric qualities for assessing visual functioning. Rasch measurement offers valuable patient-level data for low-vision rehabilitation and treatment planning.

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Area of Science:

  • Ophthalmology
  • Psychometrics
  • Rehabilitation Science

Background:

  • Visual functioning questionnaires (VFQs) are crucial for patient-centered care.
  • Assessing functional vision performance is essential for effective low-vision rehabilitation.

Purpose of the Study:

  • To investigate the psychometric properties of the Self-Report Assessment of Functional Vision Performance (SRAFVP).
  • To present Rasch-generated patient-level data for functional vision assessment.

Main Methods:

  • Administered the 39-item SRAFVP to 102 patients across various daily living activities.
  • Utilized confirmatory factor analysis, principal components analysis, and the Rasch model for psychometric evaluation.
  • Generated Keyform outputs to visualize individual patient response patterns.

Main Results:

  • The SRAFVP demonstrated a single dominant measure, with good item-level psychometric qualities after rating scale adjustment.
  • Items exhibited a logical difficulty order, and the measure showed no ceiling or floor effects.
  • Rasch analysis provided distinct patient strata and individual response patterns.

Conclusions:

  • The SRAFVP exhibits favorable psychometric properties for assessing functional vision.
  • Rasch measurement facilitates theory-based instrument calibration and enhances understanding of visual functioning.
  • Rasch-generated outputs can aid in goal setting and treatment planning for low-vision rehabilitation.