TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

front central optic zone radius [1 record]

Record 1 2023-05-16

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Orthoses
  • Prostheses
  • The Eye
Universal entry(ies)
ra0
symbol, see observation
DEF

The radius of curvature of the front central optic zone of a multifocal contact lens.

OBS

Glasses and contact lenses are considered to be either visual orthotic devices or visual prosthetic devices.

OBS

In the symbol, the letter "r" is italicized, and the letter and number "a0" are written in subscript (ra0).

OBS

front central optic zone radius: term and definition standardized by the International Organization for Standardization (ISO).

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Orthèses
  • Prothèses
  • Oeil
Entrée(s) universelle(s)
ra0
symbol, see observation
DEF

Rayon de courbure de la zone optique centrale antérieure d'une lentille de contact multifocale.

OBS

Les lunettes et les lentilles de contact sont considérées comme étant soit des orthèses visuelles, soit des prothèses visuelles.

OBS

Dans le symbole, la lettre «r» s'écrit en italique, et les lettre et chiffre «a0» s'écrivent en indice (ra0).

OBS

rayon de la zone optique centrale antérieure : terme et définition normalisés par l'Organisation internationale de normalisation (ISO).

Spanish

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