值得注意的还有斗柄左数第二颗星“开阳”，它与临近的“开阳增一”是一对用于测试视力的肉眼可见双星系统。

Notable too in skygazing lore Mizar, second star from the left in the dipper's handle, forms a vision-testing visual double star with apparently close Alcor.

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老师送我回家，给我妈妈留了张便条，上面写着我需要去看眼科医生，因为我视力测试不及格。

The teacher sent me home with a note for my mother that said I needed to visit the eye doctor because I failed the vision test.

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意大利和英国的科学家计划把16世纪天文学家伽利略的尸体挖掘出来并进行DNA测试，以决定他晚年严重的视力问题是否影响了他的一些天文发现。

ROME - Italian and British scientists want to exhume the body of 16th century astronomer Galileo for DNA tests to determine if his severe vision problems may have affected some of his findings.

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So, that's like the eye test, the glance test.

所以就像是视力测试。

耶鲁公开课 - 1945年后的美国小说课程节选

And again, she ran the eye test.

然后她又进行了一次视力测试。

哈佛公开课 - 幸福课课程节选