API/ASME，对无损检测/探伤人员的要求，都引用了《SNT-TC-1A无损检测人员的
评定和资格》，是API/ASME标准普遍采用的无损探伤/检测人员评定和发证推荐要求。
SNT-TC-1A同时明确了探伤/检测人员的视力检查要求如下：
API 外审视力检查
《Jaeger Reading Card 无损探伤人员视力检查表/耶格读卡》视力检查：近距视力检查。视力检查宜每年进行一次。
色盲检查：按照色盲检测图或是灰度表，进行色盲检查。
具体使用方法可咨询技术服务电话：010-61272284。
Jaeger Reading Card 耶格氏视力表 无损检测专用
this is the near-vision acuity eye card referenced in SNT-TC-1A. A must for
employers qualifying NDT inspection personnel. NOTE: This reading card has
not been certified as satisfying other standards bodies near-vision acuity
requirements. KEYWORDS: JAEGER; VISUAL ACUITY; VISUAL; VISION;