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Persona LowVisionMagnified

Canonical ID: low-vision-magnified · Category: Accessibility Personas · Since: v12.0.0

See: Persona-LowVision for the full documentation page.

This page documents the low-vision-magnified persona ID as used in the CLI and MCP tools. The full persona documentation is maintained at Persona-LowVision.

Quick Reference

Description: User with low vision using 3x screen magnification, effectively seeing only 1/9th of the screen at once. Causes a "tunnel vision" effect with frequent scrolling and panning.

Cognitive Profile

Trait Value Meaning
patience 0.70 Patient; understands that navigation takes longer
riskTolerance 0.30 Low; cautious with limited visual information
comprehension 0.60 Normal when content is visible and legible
persistence 0.70 High; determined to find content despite visual constraints
curiosity 0.30 Low; exploration is costly with magnification
workingMemory 0.60 Normal capacity
readingTendency 0.80 High; reads carefully when text is visible
selfEfficacy 0.45 Low-medium; reduced confidence in task completion
changeBlindness 0.80 Very high; cannot see peripheral changes while magnified
siteFamiliarity 0.30 Low; magnification makes layout feel unfamiliar

Key Behaviors

  • Uses 3x screen magnification (sees 1/9th of page at a time)
  • Requires high contrast for text legibility
  • Reads slowly and carefully when content is visible
  • Misses peripheral content and changes outside viewport
  • Pans systematically across pages to build spatial model

When to Use

Use this persona when testing:

  • Content legibility at high zoom levels
  • Layout behavior at 200-400% browser zoom
  • Contrast ratios (WCAG AA minimum 4.5:1)
  • Spatial layout and content discovery
  • Notification visibility for users with limited viewport

Usage

npx cbrowser cognitive-journey --persona low-vision-magnified --start https://example.com --goal "find contact page"
await cognitive_journey_init({
  persona: "low-vision-magnified",
  goal: "find contact page",
  startUrl: "https://example.com"
});

Research Basis

Approximately 2.2 billion people globally have vision impairment (WHO). At 3x magnification, users effectively see 1/9th of the screen at once, creating a "tunnel vision" effect that fundamentally changes navigation strategy.

  • Jacko, J. A., Dixon, M. A., Rosa, R. H., Scott, I. U., & Pappas, C. J. (2000). Visual profiles and performance in computer task completion by users with low vision. ACM SIGACCESS Conference on Assistive Technologies.
  • Brody, B. L., Roch-Levecq, A. C., et al. (2002). Age-related macular degeneration, self-efficacy, and depression. Investigative Ophthalmology & Visual Science, 43(9), 1039-1045.

Related


Copyright: (c) 2026 Alexa Eden.

License: MIT License

Contact: [email protected]

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