ISO/TR 11797:2024

International Standard   Current Edition · Approved on 06 November 2024

Ophthalmic optics – Spectacle lenses – Power and prism measurements

ISO/TR 11797:2024 Files

English 50 Pages
Current Edition
83.95 BHD

ISO/TR 11797:2024 Scope

This document describes the methods currently used in applying tolerances to the focal powers of spectacle lenses and methods that can be considered for adoption in the future; it also describes methods of measuring the prism imbalance (relative prism error) between the lenses of a mounted pair. The results of a 2014 survey of manufacturing capability for lens power and a 2018 international web survey are discussed, as are possible new methods for applying tolerances to the focal power of spectacle lenses.

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 2055-1:2016
GSO 2055-1:2015 
Bahraini Technical Regulation
HALAL FOOD - Part 1 : General Requirements
GSO 2055-1:2015
 
Gulf Technical Regulation
HALAL FOOD - Part 1 : General Requirements

Recently Published

ISO 1952:2025
 
International Standard
Coal — Determination of extractable metals in dilute hydrochloric acid
ISO 5834-1:2025
 
International Standard
Implants for surgery — Ultra-high-molecular-weight polyethylene — Part 1: Powder form
ISO 5834-3:2025
 
International Standard
Implants for surgery — Ultra-high-molecular-weight polyethylene — Part 3: Accelerated ageing methods after gamma irradiation in air
ISO 15238:2025
 
International Standard
Coal — Determination of total cadmium