ČSN EN ISO 7921 (195025)

Ophthalmic optics and instruments - Near reading charts

STANDARD published on 1.8.2024

The information about the standard:

Designation standards: ČSN EN ISO 7921
Classification mark: 195025
Catalog number: 519427
Publication date standards: 1.8.2024
The number of pages: 24
Approximate weight : 72 g (0.16 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

Annotation of standard text ČSN EN ISO 7921 (195025):

This document applies to printed, projected, and electronic displays of high-contrast text that are designed for assessment and measurement of near reading acuity under photopic conditions.
The definitions and requirements of this document apply to the Latin alphabet