I used するin the sense of "choose", not "wear". The reason being that the situation (at least as I assume it to be) is not one of deciding to buy round lenses or no lenses at all, but deciding whether to choose round lenses or some other shape.
I wish one of our native speaking friends would address both that and your other question.
The difference between みたい and みえる in this case seems to me to be small and not that important. みたい can be used to refer to things that "seem" to be like something else, whether that is determined visually or not. みえる is limited to visual appearance.