"To have a vision does not require to have eyes." (details from "Milton dictating to his daughter.") (see related A | B | C | D | E | F), 1566 Ecole Francaise Louvre Museum, Paris, France
Note that the ocular globes (eyeballs) are rather large and that the corneas (transparent anterior zones) are opaque - a suggestion that the disorder may be due to an increased intra-ocular pressure (glaucoma). If you are or know an ophthalmologist, please share with us your views.