眼镜测试里的字母缩写是什么意思？SPH,CYL,PX,PY

我不是医生, 我也只是好奇, 然后上网查了资料. 仅供参考, 翻译不准之处, 见谅.

S.E. = Spherical equivalent 球镜等价 (不加散光片的正常球镜所能达到的最佳清晰度)

VD = Vertex Distance 顶距 (眼凸出的顶点到镜片的后点距离)

PD = Pupil Distance 瞳距 (两个瞳孔间距)

S或者SPH = Sphere 球面 (正常近视/远视度数 -号为近视, +号为远视)

C或者CYL = Cylinder 柱面 (散光)

A = Axis 轴向 (散光--柱镜的方向, 角度)

参考:

S.E.

This is the power that would provide the clearest vision if the astigmatism wear removed from the prescription. 意味着不加散光镜(柱镜), 近视镜所能达到的最佳清晰度.

VD

This is the distance between the anterior surface of the eye and the posterior surface of the lens in front of the eye. For higher prescriptions (such as your right eye) making the vertex distance of the glasses different than the vertex distance during testing can result in an actual prescription substantially different than desired. 眼睛的前表面和镜片后表面之间的距离. 当你的眼睛顶距和测试时(验光时)的顶距不一样时, 实际的处方也会有不同. (这也是为什么机器验光后为什么验光师要手动精调的原因. )

S和C

Cylinder and axis are the amount of astigmatism correction needed. Astigmatism is correction needed due to the cornea not being perfectly round. This is a very common finding. Your Add Power is the power needed, added to your prescription, that you need to see up close. This should be located elsewhere on your prescription. The mid-distance correction is called the "intermediate." This is usually half of the add power.

柱镜和角度是矫正散光的需要. 散光是因为角膜不是纯圆造成的. 散光是普通的. 你的柱镜加权是必须的, 会加到你的处方里. 柱镜加权通常是柱镜度数的一半. 也就是说, 你球镜是3.75, 柱镜是0.5, 那你的S.E. 是4.00

A

柱镜(散光)是有方向性的, 所以散光需要调整柱镜的角度以达到清晰. 在手动验光的时候会转动镜片, 你会找到一个最清晰的角度. 那个角度就是这个A.

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