276.检查者得知散光表中较清晰的黑线的位置之后,说明与最清晰的黑线相垂直的方向眼的屈光状态接近于正视,也就是说与最清晰的黑线相垂直的方向的眼的屈光力可聚集成一条最靠近视网膜的焦线。因此,以近视眼为例,只要把凹圆柱镜的光轴放到与最清晰的黑线相垂直的方位,从而修改与最清晰的黑线相平行的方位的眼的屈 276. After the inspector learns the clearer black line position in the astigmatism table, the refractive state of the eye in a direction perpendicular to the sharpest black line is close to the front, that is to say, perpendicular to the clearest black line The direction of the eye refractive power can be gathered into a focal line closest to the retina. Therefore, to myopia, for example, as long as the concave cylindrical lens optical axis and the clearest black line perpendicular to the orientation, so as to modify the most clear black line parallel to the direction of the eye flexor