Establish tonal contrasts
Because the lens yellows with age, thus diminishing the eye's ability to differentiate color, Gunson suggests using strong tonal contrasts to highlight transitions between adjacent materials. Articulate the edges of countertops, sinks and transitions in flooring with contrasting stripes or LED tapelight. Paint switch plates, doorframes, chair rails and baseboards a different color from the walls to reinforce spatial orientation and help with navigation. Similarly, if the walls are light-colored, opt for faucets and grab bars in a darker finish, such as oil-rubbed bronze, to heighten their visibility.
Activate the senses
The bathroom can also support low-vision users with tactile cues and other sensory information. Install embossed ceramic floor tiles or rubber flooring near steps or doorways, alerting users to transitions that could be trip hazards. Sensor-activated faucets, bath fans and lighting eliminate the need for manual operation.