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CEN

CEN/TC 170/WG 4 - Contact lenses I

Contact lenses I

General Information

Status
Inactive
Parent
CEN/TC 170 - Ophthalmic optics
Standardization Organization
ICS
Directive
Mandate
50
CEN
EN ISO 8599:1996(Main)
Optics and optical instruments - Contact lenses - Determination of the spectral and luminous transmittance (ISO 8599:1994)
SIST EN ISO 8599:2000

Specification of a uniform test procedure in order to achieve comparable test results.

  • Standard
    7 pages
    English language
    e-Library read for
    1 day
CEN
EN ISO 9914:1996(Main)
Optics and optical instruments - Contact lenses - Determination of refractive index of contact lens materials (ISO 9914:1995)
SIST EN ISO 9914:2000

Specification of a uniform test procedure in order to achieve comparable test results.

  • Standard
    6 pages
    English language
    e-Library read for
    1 day
50

Frequently Asked Questions

CEN/TC 170/WG 4 is a Working Group within the European Committee for Standardization (CEN). It is named "Contact lenses I". This committee has published 2 standards.

CEN/TC 170/WG 4 develops CEN standards. Currently, there are 2 published standards from this working group.

The European Committee for Standardization (CEN) is a public standards organization that brings together the national standardization bodies of 34 European countries. CEN provides a platform for developing European Standards (ENs) and other technical documents in relation to various products, materials, services, and processes, supporting the European Single Market.

A Working Group in CEN is a specialized group responsible for developing standards or technical work within a defined scope. These bodies bring together international experts to create consensus-based standards that support global trade, safety, and interoperability.