"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 | G | H | I), 1566 Ecole Francaise Louvre Museum, Paris, France

For clinicians who gaze at this image, it should be obvious that the size of this ocular globe is enlarged and the corneas are cloudy. For those who like philosophy, it is obvious that many poets are blind, as was this one. In this instance, it is likely that Milton suffered from glaucoma (glaucos implies glimmering haze).