ISO 9342-1:2023

International Standard   Current Edition
· Approved on 07 July 2023 ·

Optics and optical instruments — Test lenses for calibration of focimeters — Part 1: Reference lenses for focimeters used for measuring spectacle lenses

Ophthalmic equipment
Including ophthalmic implants, glasses, contact lenses and their cleaning products

ISO 9342-1:2023 Files

null Pages
Current Edition

ISO 9342-1:2023 Scope

This document specifies requirements for reference lenses for the calibration and verification of focimeters that are used for the measurement of spectacle form lenses, e.g. those complying with ISO 8598-1. It also gives a method for the determination of the back vertex power of the reference lenses.

NOTE            It is accepted that other reference lenses can also be used with powers within the given range, manufactured to the same standard of accuracy and form, but different back vertex powers. However, only lenses with integer nominal powers, as described in 4.1, can be used for the calibration of digitally-rounding focimeters.

Best Sellers

GSO 150-2:2013
 
Gulf Standard
Expiration dates for food products - Part 2 : Voluntary expiration dates
BH GSO 150-2:2015
GSO 150-2:2013 
Bahraini Standard
Expiration dates for food products - Part 2 : Voluntary expiration dates
BH GSO 150-1:2015
GSO 150-1:2013 
Bahraini Technical Regulation
Expiration dates for food products -Part 1 : Mandatory expiration dates
GSO 150-1:2013
 
Gulf Technical Regulation
Expiration dates for food products -Part 1 : Mandatory expiration dates

Recently Published

ISO 17099:2024
 
International Standard
Radiological protection — Performance criteria for laboratories using the cytokinesis-block micronucleus (CBMN) assay in peripheral blood lymphocytes for biological dosimetry
ISO 23555-3:2024
 
International Standard
Gas pressure safety and control devices for use in gas transmission, distribution and installations for inlet pressures up to and including 10 MPa — Part 3: Safety shut-off devices
ISO/TS 9321:2024
 
International Standard
Health informatics — General requirements of multi-centre medical data collaborative analysis
ISO 4080:2024
 
International Standard
Rubber and plastics hoses and tubing, and their assemblies — Determination of permeability to gas