Can wearing fake glasses that has plastic lense hurt your eyes?

When i say ‘hurt’ I really mean, if wearing fake glasses can cause eyes to decrease in vision. Today I just recently bought these fake glasses at a store. I found them really cool. My friend suggested i poke out the lense or it’ll ‘hurt’ my eyes. The explanation to why was because eyes are not used to seeing that plastic lense in front if it. Concentrating on it would be different and difficult for your eyes. After hearing that, and being the paranoid teenager that i am, I stabbed my fake glasses to realize that the lense can’t be removed/ poked out.
I decided to take precautions and not always wear those glasses.

It seems like a reasonable answer, but is it true? Does it really decrease your eye vision and hurt it?