prism diopter

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Related to prism diopter: prism dioptre

prism di·op·ter (p.d.),

the unit of measurement of the deviation of light in passing through a prism, being a deflection of 1 cm at a distance of 1 m.
References in periodicals archive ?
2 prism diopters at 1 week after injection into the antagonist muscle in paralytic strabismus.
The angle of preoperative and postoperative deviations were assessed by Hirschberg test, Krimsky test or alternate prism cover test (in prism diopters [PD]) when possible.
They defined surgical success as [less than or equal to] 10 prism diopters and found that in sensory strabismus, good visual acuity was associated with higher surgical success in the long term.