Terrestrial longitude is measured in degrees east or west of the Greenwich meridian.

地球经度是用格林尼治子午线向东或向西度数。

Too high astigma degree and the worse astigmatism may affect the recovery of contrast sensitivity vision .

术后患眼散光度数过大、人工晶体眼像增大可能是影响患眼对比敏感度视觉恢复。