Rachel's 'eye sensitivity' makes no sense

We are told that Rachel 'freaks out' even if someone else touches their eye(s), even if the eye is closed, and even more if it's her own eye(s).

Que all the banal 'eye puns'.

It would seem to make sense, as eyes are a very delicate part of the .. wait a moment, what is Rachel wearing? Is that..

.. is that make-up?

You see (no pun intended) my point, right?

How the heck does Rachel freak out if Joey touches his eyelid with his eye closed, but put on make-up that requires for her to actually touch her eyeballs through her eyelids, which should be way more freaky than watching anything Joey is doing?

HOW?!

What kind of sense does this make? I'll tell you - none.

Sometimes I wish there was ACTUAL congruency between what we're told and what we see on the screen. But there almost never is.. sigh.