This standard BS EN ISO 9801:2009 Ophthalmic instruments. Trial case lenses is classified in these ICS categories:
11.040.70 Ophthalmic equipment
This International Standard specifies requirements for mounted ophthalmic full and/or reduced aperture trial case lenses for the determination of the refractive error of the eye.
This International Standard takes priority over ISO 15004-1, if differences exist.
