ISO 7921
Ophthalmic optics and instruments - Near reading charts
Augenoptik und ophthalmische Instrumente - Nahlesesehschärfetafeln
Responsible national committee
NA 027-01-08-10 AK - Visual acuity and test methods
Responsible international committee
ISO/TC 172/SC 7/WG 6 - Ophthalmic instruments and test methods