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. 2022 Mar;42(2):410-413.
doi: 10.1111/opo.12924. Epub 2021 Dec 4.

Technical notes on prism-dioptre and Prentice's rule

Sidney J Faria-E-Sousa  1
Affiliations

Technical notes on prism-dioptre and Prentice's rule

Sidney J Faria-E-Sousa. Ophthalmic Physiol Opt. 2022 Mar.

Abstract

Purpose: To show an alternative interpretation for prism-dioptre and access Prentice's rule accuracy.

Methods: Algebraic calculation.

Results: The prism-dioptre can be expressed as a percentage of the distance between the prism and the plane of prismatic dislocation. Prentice's rule is an imprecise mathematical expression prone to expressive errors.

Conclusions: The prism-dioptre seems to be more informative when interpreted as a percentage. Prentice's rule is more effective as a pedagogical approach for introducing the concept of spherical lenses' prismatic image dislocation rather than a method for calculating its actual value.

Keywords: Prentice's rule; non-paraxial rays; prism-dioptre; spherical aberration.

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References

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