Home > Terms > English, UK (UE) > Depth of focus
Depth of focus
The range of distance that objects are in focus. Depth of focus is directly affected by accommodation, the ability of the natural crystalline lens within the eye to change shape and thereby change focus. After around age 40 the ability to accommodate is reduced due to presbyopia and near depth of focus is limited. Depth of focus is also affected by pupil size. The smaller the pupil, the greater the depth of focus.
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Eyewear
- Category: Optometry; Contact lenses; Eye surgery
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