50 What is the general axis of astigmatism

The axial position of 50-degree astigmatism may appear at any position, and 50-degree astigmatism is a relatively low degree. 50-degree astigmatism exists in the vertical axial direction, which is called anti-rule astigmatism;50-degree astigmatism exists in the 45-degree axial direction, which is called Oblique axis astigmatism;50-degree astigmatism affects vision and requires vision correction.