Sharpness of vision, especially as tested with a Snellen chart. Normal visual acuity based on the Snellen chart is 20/20.

视觉的敏锐程度，尤指经斯纳仑氏图表所测结果。在斯纳仑氏图表上测得的一般的视觉敏锐度为20/20。

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Sharpness of vision, especially as tested with a Snellen chart. Normal visual acuity based on the Snellen chart is 20/20.

视觉的敏锐程度，尤指经斯纳仑氏图表所测结果。在斯纳仑氏图表上测得的一般的视觉敏锐度为20/20。

youdao