Home / Standards / GB 11533 GB 11533 Abolished Standard logarithmic visual acuity charts 标准对数视力表 Standard Type GB ICS 11.040.70 CCS C56 Status 废止 Issue Date 1989-03-27 Implementation 1990-05-01 Responsible Dept 国家卫生健康委 Drafting Unit 国家卫生健康委