Ok but imagine young Clark coming into his super-hypnotism powers as a young kid and Martha Kent is not having it because you can only argue with your two-year-old so much if they can sweet talk you into anything they want.
She figures out really fast that it's all in the inhuman eyes - and really, she should've known that gorgeous shade of blue was too good to be true - so when Clark gets in a fit and she just knows he's going to make a demand, she avoids direct eye contact with her sweet little angel. She knows he's not doing it on purpose, he's just a little kid, after all.
But then, he has to go to school, and Martha knows Clark won't do it on purpose, but her little baby is a charmspeaker and is accidentally going to manipulate the entire world around him into whatever he thinks he wants and that's just not going to fly!
So, Martha experiments a little. The next time they go into town for the day, Martha hands Clark a tiny pair of sunglasses to wear all day to see if lenses even make a difference. It's not that he's never worn them before, but she needs to know if he can influence anyone if he's not looking directly into their eyes. After a day of errands and several pleading looks and what are certainly puppy eyes from Clark from behind tinted lenses to no avail, Martha has her answer.
Their last stop of the day is an antique shop on Main. Martha greets the man at the counter like you only can in a small town and asks if he has any supplies of old glasses they can rifle through for Clark, just in the meantime until they can get his eyes checked. Just to limp along. It's a lie, Clark doesn't need a prescription. But in a box of used glasses, there's always the chance Martha will find what she needs.
Gary (that's his name) points her toward a dresser down the room and tells her there's a drawer filled with costume glasses and the like. They find a tiny pair of glasses for Clark and he complains at first that the world "looks funny" but then he blinks twice and looks around again and, with a grin, says "Never mind - I like them, can I keep them?"
And that's how Clark Kent starts wearing glasses.
As he gets older, continuing to grow up and especially while he's still shorter than his ma he'll occasionally glare up at her from over his lenses petulantly as he tries to get his way and it brings a whole new weight to the phrase "Don't give me that look, now, son," because Clark knows that she means not to use his Kryptonian eyes on her to get his way. It's not a secret any more than Clark being an alien is a secret that Clark can get people to do what he wants. But the few times he's done it have resulted in the biggest groundings of his entire life and more chores than he's ever wanted to do. And not just manual labor chores, but the kind of chores ma knows he doesn't like, because a ma always knows how to make a chore a chore.
In high school, for all that Clark is not very popular and has that whole quiet nerd persona going for him, he has that cute kid with the glasses Kryptonian Gaze™ down to a seductive art and he's not even trying. Because. Hello? B-i-o-l-o-g-y. So, yeah. That over-the-glasses glance from across the room? It's a whole thing and lots of girls (and guys?) are super confused by why they suddenly think Clark Kent might be super hot. Then when they look again but it's just Clark sitting there with his normal glasses again? They're not so sure...
He doesn't like to use his super-hypnotism because it feels like cheating, but depending on the circumstance he will. It's not that different than using his other abilities after all, right? If it's for the right reasons, is it?
While he's working at the Daily Planet, he'll use it on occasion to push his advantage for a story for that one extra detail, to get access to a room he might not have otherwise, to sneak into places he might not have, to make people forget his face, his name, their conversation if it was a particularly sketchy place... it's all a simple tilt down of the chin so he can look people straight in the eyes over the rim of his glasses and ask a pointed question or say something or suggest something and then....
As Superman it's different. As Superman, he never wears his glasses. He's all heat vision and x-ray vision, micro and macro vision. As Superman, he does what he needs to to save people. Sometimes that's telling someone to get to safety or go home, call 9-1-1, run, stay here, be quiet.. it's a hundred things as Superman. Sometimes it's asking guards for passcodes or entrance, sometimes it's to turn off surveillance altogether. Superman does what he has to do.
