IS 7006 : 1973 Specification for Visual Acuity Test Charts

1 Scope

1.1 This standard specifies the basic requirements of four typesof visual acuity test charts designed for either internal orexternal illumination.

2 References

IS 1286 : 1967 Pictorial markings for handling ofgoods in general

IS 1399 : 1959Glossary of terms used in optical technology