為何不可以用紙巾抹眼鏡

紙巾的fiber比較粗, 對膠鏡容易造成花痕. 眼鏡布比較幼細, 對對膠鏡傷害造成較少.
玻璃鏡比較硬. 紙巾對玻璃鏡的傷害遠比膠鏡少.

Normally, 2 kind of lens as Plastic & Glass.

Nowadays, both of Plastic lens & Glass lens will be coated a non-reflective film on it. Whatever the lens is plastic or glass, the outer layer is the non-reflective film.

The tissues is made from wood, so, the hardness is greater than fabric which is made from cotton. Greater hardness will scratch the non-reflective film easier.
The raw material of fabric is softer than tissues, so, it is better to use fabric to clean the glasses.

因為紙係較硬既纖維，所以一樣會整花鏡片表面