Prism Diopter

**Semantic type:** Quantitative Concept

**Definition:** A unit for reporting the refraction of a prism. This unit serves arbitrary standard of prismatic deflection equal to that of a prism that deflects a beam of light one centimeter on a plane that is one meter away.

**Synonyms:** - [p'diop] - [p'diop] - p'diop - prism diopter - prism diopter