DIN EN ISO 7921
Ophthalmic optics and instruments - Near reading charts (ISO 7921:2024); German version EN ISO 7921:2024
Augenoptik und ophthalmische Instrumente - Nahlesesehschärfetafeln (ISO 7921:2024); Deutsche Fassung EN ISO 7921:2024
Responsible national committee
NA 027-01-08-10 AK - Visual acuity and test methods
Responsible european committee
CEN/TC 170 - Ophthalmic optics
Responsible international committee
ISO/TC 172/SC 7/WG 6 - Ophthalmic instruments and test methods