Specification for red and green filters used in ophthalmic dichromatic and dissociation tests Ingestion-build-50790 Some text has been deleted

Some text has been deleted from clause 5

BS 3988 was first published in 1966 under the authority of the Non-ferrous Metals Industry Standards Committee and at the request of the Aluminium Industry in view of the increasing use of aluminium for electrical conductors of many types

BS EN 12094-3 helps in the evaluation of conformity of product by using initial type testing and factory production control method that verifies if the performance declarations represent the true behaviour of the product

nor from a significant hazard to life

Specification for red and green filters used in ophthalmic dichromatic and dissociation tests Ingestion-build-50790 Some text has been deleted1 Scope This British Standard 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.