Ophthalmic instruments. Perimeters included-in-kit What is ISO 18273 about

What is ISO 18273 about

— external influences on electrical equipment

see Annex A

What is BS 6997 – NBR O-ring specification about

Ophthalmic instruments. Perimeters included-in-kit What is ISO 18273 about1 Scope This International Standard specifies requirements and test methods for instruments designed to assess differential light sensitivity in the visual field by the subjective detection of the presence of test stimuli on a defined background. It does not apply to clinical methodologies and other psychophysical tests of the visual field. This International Standard takes precedence over ISO 15004, if differences exist.