BS 3668:1963
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Specification for red and green filters used in ophthalmic dichromatic and dissociation tests
BSI Group , 10/09/1963
Pages: 8
Specifies requirements for red and green filters of glass or plastics materials used in ophthalmic tests as follows: (a) dichromatic tests for ametropia, and (b) dissociating the eyes in various tests of binocular co-operation.Cross References:BS 2738BS 3062BS 3162BS 3172BS 3186BS 3199BS 3352BS 3462BS 3521
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