I don't quite understand the text. Is it perhaps saying that this is a day we should protect our eyes from her beauty? or something? - 目の愛護デーでもあります。

Treu said:

I don't quite understand the text. Is it perhaps saying that this is a day we should protect our eyes from her beauty? or something? - 目の愛護デーでもあります。

No, just another one of the many special days, and in this one they remind you the importance of keeping your eye sight.