标准号:IS 6473-1972
发布日期:1972/5/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard specifies the features of eye testing trial lens sets which allow the anomalous refraction to be tested.1.2 It also covers the general and functional requirements of the trial lens sets for prescription of spectacles.