Specification for red and green filters used in ophthalmic dichromatic and dissociation tests LONG_TITLE factory made or site built

factory made or site built

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Specification for red and green filters used in ophthalmic dichromatic and dissociation tests LONG_TITLE factory made or site builtWhat is BS 3668 Red and green filters used in ophthalmic dichromatic and dissociation tests about? BS 3668 is a European standard that outlines the requirements for red and green filters of glass or plastics materials used in ophthalmic tests as follows: Dichromatic tests for ametropia Dissociating the eyes in various tests of binocular co operation to ensure that the filters manufactured achieve the minimum performance criteria. Who is BS 3668 Red