Evaluating Performance, Technology, and Psychosocial Context
The whole-person evaluation
Low vision affects work, school, self-care, and identity. A complete evaluation gathers work history (job demands, accommodations, transferable skills), educational performance (reading level, note-taking, assistive tech used, IEP/504 history), and ADL/IADL performance (dressing, cooking, medication management, shopping, finances, transportation). Ask about technology use-screen readers, magnification software, smartphones, optical character recognition-and comfort level, because a device the person won't use has no value.
Quality of life and psychosocial function matter: depression, social isolation, fear of falling, and adjustment to vision loss influence outcomes as much as acuity. Screen for cognitive function too-memory, attention, and problem-solving affect the ability to learn device use; distinguish vision-related difficulty from cognitive difficulty.
Traps to watch
- Assuming a device is appropriate because it works optically, without checking whether the person can and will use it.
- Attributing task failure to vision when cognition, motivation, or environment is the cause-or vice versa.
- Overlooking IADLs (finances, transportation, medication) while focusing only on basic ADLs.
- Missing depression or grief; adjustment issues can block rehabilitation progress.
- Ignoring the environment: lighting, clutter, and support persons change performance.
Rule of thumb
Evaluate the person-task-environment interaction. A finding only matters if it explains a real performance gap.
Worked example: A retired teacher reports difficulty reading mail. Acuity is 20/70. Rather than jumping to a magnifier, ask about lighting, mail volume, and technology comfort. A task lamp plus a smartphone magnifier may serve better than an optical device-matching the tool to the person's habits and environment.