“视别” 可能是指这副眼镜是用来看远或者看近或者其他目的的。
例：
Viewing Type (Type of Lens): Distance（用来看远的；近视镜）。
Viewing Type (Type of Lens): Reading（用来看近的；阅读镜；老花镜）。

What is the Difference Between Reading Glasses and Distance Glasses?
... As a result, people often choose to receive prescription reading eyeglasses to get a more accurate vision correction and frame fit. ...
Distance glasses, on the other hand, are intended for people with myopia, or nearsightedness, to improve their ability to see faraway objects more clearly.
https://www.edow.com/nearsighted/what-is-the-difference-betw...