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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Resuts it has been found that visual acuity of visual field was deteriorated in 68 of 221 eyes with normal IOL.

结果在显微小梁切除术后眼压正常的221只眼中，68只眼视力发生了减退。

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Results Visual acuity improved in 3 eyes, normal external appearances remained in 6 eyes.

结果手术后视力提高3例，保持眼球形态6例。

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