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Strategies for Upgrading Senior Care Environments

June 1, 2001
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Specific design ideas for residents' vision needs, mobility and sensory comfort by Elizabeth C. Brawley, IIDA, and Mark Taylor
For upgrading senior care environments ATTENTION TO CERTAIN KEY DETAILS CAN GO A LONG WAY
By Elizabeth C. Brawley, IIDA, and Mark Taylor

Until only a few years ago, there was little awareness of the potential of the physical environment in long-term care facilities as a therapeutic tool. We now know that the interior design of a skilled nursing facility impacts more than the facility's public image. Interior design can significantly enhance residents' functional inde-pendence and autonomy. This means paying particular attention to designing for residents' vision needs, mobility and sensory comfort. Designing for Vision
Most residents in a skilled nursing environment are in their 80s and beyond. As we age, our vision experiences many changes, e.g.:

'extreme sensitivity to glare
'decreasing ability to react to changes in light levels
'reduced ability to discern details
'a restricted field of vision and depth perception and a reduced sensitivity to contrast and color recognition

To see and function normally, older seniors need at least five to eight times more light in their surroundings than people in their 20s do. Add to this the tremendous number of older adults who have cataracts, macular degeneration, glaucoma and other eye diseases, and the importance of designing for vision enhancement becomes even more apparent.Scientific research has shown that natural light provides positive photobiological benefits for seniors. Sunlight stimulates the circadian and neuroendocrine systems that regulate sleep and other body functions. Improper lighting affects mobility and such vital sensory functions as hearing, since many seniors with diminished hearing lip-read to increase understanding. While we are only beginning to discover the effects of "light starvation," this research comes at a time when we have ignored or all but eliminated natural light from most of our elderly housing environments.

Light in facilities needs to be at consistent levels, avoiding areas of uneven brightness that can create shadows and problems with depth perception. Gradual changes of light levels are also important because older eyes adapt to light changes much more slowly.Eliminating glare is also very important, because it not only increases resident comfort, but also helps minimize falls and maximize attention span. Light fixtures and windows might produce direct glare, while indirect glare is produced by light reflecting off shiny surfaces such as highly waxed hard floors. With better lighting design and selection of materials that absorb glare, skilled care providers can go a long way toward creating more comfortable living spaces for seniors.The value of windows as a source of natural light can be enhanced by using light-colored fabrics and paints around them, increasing their reflective value by as much as 80%. Also, when window sills are lowered to 15 to 20 inches above the floor, those residents who must remain seated can experience natural light directly and are more able to enjoy the outside views.

Just as age influences the type and amount of light we need, it also impacts how we see color. As we age, the lens of the eye thickens and begins to yellow. To comprehend this, look at surrounding colors through a piece of yellow cellophane. While appropriately selected colors engender feelings of comfort and well-being, contrast is even more important to older eyes. With aging, the ability to see color differences diminishes. This can have tremendous impact on how residents see visual cues. For example, if carpet is coved up the wall, seniors might perceive the floor to be higher than it really is. To help ensure feelings of security and safety, contrasting colors can be used effectively as a visual cue, to distinguish the difference between floor and wall, between door and doorway, and more. Since light and color are intricately related, choosing light sources with good color rendition is also critical. The new generation of fluorescent lights, such as T-5 and T-8 lamps, are not only energy-efficient, but also mimic natural light.

Designing for Mobility and Sensory Comfort