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验光结果的表示方法有多种,其中早期表示方法为:(1)±a sph=±b cyl轴在θ其中“±”为正负符号;“a”、“b”分别为球镜和柱镜的数值;“sph”表示球镜,“cyl”表示柱镜;“θ”为散光轴向角度。后来演化为:
There are many ways to represent the results of optometry. The early representations are as follows: (1) ± a sph = ± b The axis of cyl at θ where “±” sign is positive and negative; “a”, “b” Respectively spherical and cylinder values; “sph ” said spherical mirror, “cyl ” said cylinder; “θ ” astigmatism axial angle. Later evolved into: