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The Optical Knowledge Portal
Information – Education – Certification

Low vision lighting

Low vision lighting

The value of good lighting only becomes clear when patients see it for themselves and test it in practice. To be able to read certain texts again, several requirements must be fulfilled. The text must be of a size that the eye can resolve and must be properly illuminated to form a sharp retinal image. While magnifying visual aids can influence size and sharpness, lighting and contrast are just as important. 85% of all information is taken in through the eyes: Light helps us see colours, affects the human psyche and influences the hormone balance.

Basics of good lighting

Good lighting is

  • glare-free,
  • consistent,
  • pleasant,
  • sufficiently bright.

It is recommended to use indirect lighting to illuminate rooms if possible. Simple reading lamps can already provide the necessary light intensity. Many older people are keen on saving electricity. It is important to make them aware of the following facts:

  • 85% of all information is taken in through the eyes.
  • Older eyes require considerably more light than younger eyes.
  • In addition to improving visual performance, good light promotes well-being.
  • Energy-saving lamps consume eight times less power and last ten times longer than traditional incandescent light bulbs.
  • LED lamps consume up to 25 times less power and last 50 times longer than traditional incandescent light bulbs.

Direct illuminationDirect illuminationDirektbeleuchtung Flur

  • Significant difference in luminance => direct glare,
  • Pronounced shadowing
  • Reflections =>glare reflected from floors,windows, doors and mirrors.

 

 

Indirect illuminationIndirect illuminationIndirekte Beleuchtung

  • Consistent, soft transition due to multiple reflections
  • Minimal shadowing
  • No reflections from floors,windows, doors and mirrors
  • Pleasant room ambience

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