They do be as rare as unicorn. Also hollywood and popular media are wrong and I think everyone will look better with glasses. 

Not listed here:

- The Antagonist' Pet (manhwa) - long hair glasses aide, beware of yuri bait

- The Villainess Just Wants to Eat (game) - long hair glasses prince (to be crowned king)

- Ellin's Solhwa (webcomic) - long hair glasses advisor, only wear glasses at the start