WhitepaperEmerging evidence
Seeing Clearly in Dementia: Contrast, Clutter and Visual Perception
Why bold outlines and uncluttered pages help people living with Alzheimer’s disease
Written for: Medical directors, Activity directors, Nursing leaders
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Key takeaways
- Compared with healthy people of the same age, people with Alzheimer’s disease showed reduced contrast sensitivity across the whole range tested, along with deficits in color and depth perception.1
- Because these differences appeared against healthy people of the same age, they are not explained by aging alone.1
- In a small study of 9 people with advanced Alzheimer’s disease, high-contrast red tableware raised food intake by 25% and liquid intake by 84%.2
- Bold outlines, strong contrast and one clear subject per page apply the same principle to activity pages.
- The design evidence is still small-scale, so watch how each person responds.
At a glance
+25% food, +84% liquid
Vision in dementia is more than eyesight1 min
In brief: Alzheimer’s disease affects how the brain processes what the eyes see.
A person can pass an eye chart and still struggle to pick out a pale shape from its background. For activity design, the finding that matters is reduced contrast sensitivity: low-contrast details are harder to see, whatever the eye test says.
Contrast can change what people do1 min
In brief: Making plates stand out from the table raised food and drink intake in advanced Alzheimer’s disease.
Contrast, clutter and figure against ground1 min
In brief: When contrast sensitivity falls, busy backgrounds and faint lines make a picture harder to read.
Reduced contrast sensitivity1 means low-contrast lines, gray fills and busy backgrounds compete with the subject of a page. The design principles that follow are reasoned from that finding rather than tested in trials:
- Strong outlines in pure black on white, never gray shading or textures.
- One clear subject, with space around it, at the advanced support tier.
- Fewer, larger elements at the moderate tier; finer detail only at the early tier, for residents who enjoy it.
- No background patterns behind text.
How Cognicopia pages apply it1 min
In brief: Three detail tiers, pure black-and-white line art, and line weights that can be raised for any resident.
Every Cognicopia Coloring picture is drawn at three support tiers, from detailed to a single focal subject, in pure black lines on white with no gray, gradients or textures. Line weight rises with the tier, and staff can raise the line weight for a resident with low vision without changing the detail. See Print for low vision for the print standard.
What this means for your community
- Choose pages with strong outlines and a clear subject, especially for residents at the moderate and advanced stages.
- Avoid gray, faint or decorative backgrounds behind text and pictures.
- Apply the same principle beyond the page: plates that contrast with the table, and signs that contrast with the wall.
- Watch each person’s response, and adjust the tier and line weight.
What this evidence does not show
- The visual-deficit research is from laboratory studies, and people vary widely.
- The tableware study had 9 participants and was not randomized.
- No trial has compared high- and low-contrast activity pages directly.
References
- Cronin-Golomb A, Corkin S, Rizzo JF, et al. Visual dysfunction in Alzheimer’s disease: relation to normal aging. Annals of Neurology. 1991;29(1):41–52. doi:10.1002/ana.410290110 View source (opens in a new tab)
- Dunne TE, Neargarder SA, Cipolloni PB, Cronin-Golomb A. Visual contrast enhances food and liquid intake in advanced Alzheimer’s disease. Clinical Nutrition. 2004;23(4):533–538.
How to cite this page
Cognicopia. Seeing Clearly in Dementia: Contrast, Clutter and Visual Perception. Cognicopia Clinical Science & Research Center. Updated September 30, 2026. Accessed [date]. https://cognicopia.org/resources/research/dementia-visual-perception/
An educational summary for professionals, not medical advice. It reports each source’s findings as the source states them, and was reviewed against its sources on September 30, 2026. Cognicopia makes the tools this page mentions. Found an error? Tell us.