I was watching [S] Game over and at one point where Kanaya and Karkat are running on the Grey slab things, you can see jane being flung out of shot, with her glasses falling off. Notably, her eyes, like Johns, appear to be on her glasses.

Alright so If Jane’s eyes are glasses, and Jake’s eyes are glasses and John’s eyes are glasses, then I think we can safely assume that Jade’s eyes are also glasses.