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Light and Age

Most adults experience a degradation of almost all visual functions with advancing age. This generally leads to adverse effects both at work and in daily life. By adapting the light and lighting situation to the needs of older people, these negative changes can be successfully offset.

Changes in eyesight and perception associated with advancing age Reduction of visual acuity Diminished contrast perception Higher sensitivity to glare Delayed focussing Presbyopia (farsightedness) Delayed bright-dim adaptation Changed color perception Impaired depth perception Limitation of the visual field

New requirements on good workplace lighting Lighting planning should incorporate both daylight and artificial light Light intensity at the workplace must generally be increased for older people Lamps should illuminate a sufficiently large area evenly and adequately Potential sources of glare must be avoided Illumination must not produce annoying shadows, as these can lead to irritation and possibly even anxiety Transitions from brightly illuminated areas to areas less well lit should not be abrupt but gradual, because with increasing age the time required for adaptation is longer A lamp should be easy to adjust from the user’s respective working position Lamps should not have high surface temperatures Lamps should be dimmable and easily adjustable

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