e/Prism correction

Information
has gloss	eng: In optometry, prism correction is a component of some eyeglass prescriptions. A lens with prism correction displaces the image, which is used to treat muscular imbalance or other conditions (see vergence dysfunction) that cause errors in eye orientation. Prism correction is measured in prism dioptres. A prescription that specifies prism correction will also specify the "base", which is the direction of displacement.
lexicalization	eng: prism correction
instance of	e/Corrective lens