
Visual acuity test types. Specification for Landolt ring optotype for non-clinical purposes
出版:British Standards Institution

专家解读视频
Specifies dimensions for Landolt C optotype.
© British Standards Institution 2013
Document identifier notes:
Also numbered BS 4274-2:1996.
ISO 8596:1994 - Identical
NS EN ISO 8596:1996 - Identical
NF EN ISO 8596:1996 - Identical
UNI EN ISO 8596:1996 - Identical
I.S. EN ISO 8596:1996 - Identical
BS 4274-2:1996 (Dual Number) - Equivalent
NEN EN ISO 8596:1996 - Identical
NBN EN ISO 8596:1996 - Identical
SN EN ISO 8596:1996 - Identical
ONORM EN ISO 8596:1996 - Identical
DIN EN ISO 8596 (1996-05) - Identical
UNE EN ISO 8596:1996 - Identical
SS EN ISO 8596 Ed. 1 (1996) - Identical