Illumination
The role of lighting in assisting those with poor
vision is probably the single most important, and conversely neglected,
factor of low vision care. Many conditions resulting in reduced
visual acuity cause a marked increase in sensitivity to glare but
a need for increased task lighting. Consequently any extra illumination
must be directional rather than just a general increase in ambient
light levels. Additional lighting may take one of many various forms.
Usually the illumination is stand mounted although wall and hand
mounted units can also be considered. A good level of non-glare
directional illumination can give as much benefit as a 2x magnifier.
Lighting sources can utilise a number of bulb types,
each with claimed benefits, but ultimately the actual usefulness
of a particular unit is dependent on the individual user.
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