slab-off prism

名词 n.

英文释义

名词 n.
  1. A lens modification used to correct for differences in vision between the two eyes, particularly in cases of anisometropia, in which a prism is ground into the lens of the eye with the stronger prescription, thereby helping to align the visual images seen by both eyes.
    — Although Fresnel prism may be used for full-time wear, if successfully worn, it is possible to replace it by ordering slab-off prism with the slab line oriented vertically.

词形变化

slab-off prisms plural
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