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Standard ČSN EN ISO 7921 1.8.2024 preview

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ČSN EN ISO 7921 (195025)

Ophthalmic optics and instruments - Near reading charts

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STANDARD published on 1.8.2024


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The information about the standard:

Designation standards: ČSN EN ISO 7921
Classification mark: 195025
Catalog number: 519427
Publication date standards: 1.8.2024
SKU: NS-1192945
The number of pages: 24
Approximate weight : 72 g (0.16 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

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Ophthalmic equipment

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

Preview of the standard ČSN EN ISO 7921 (195025)

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