De praecipius visus symptomatis eorumque causis Physica & Medica contemplatio

it shakes everything nearby and immediately pulls back into the opposite part. The ray presses more sharply and, by its thinness, strikes the humors with an ambivalent motion and, having mixed them together, dislodges them from their proper seat, whence, with the organ vitiated, the death of the function follows.

LXVIII.
Nor does that example of a very rare case move us, which we received from a most learned friend, about a man rhinoptēs a nose-seer, for whom, from a badly healed wound of the eye, visible images flowed through the open passages of the nostrils, so that he could distinguish the closest objects. For it is agreed that there is a foramen at the greater angle filled by nature with glandular flesh, where the excrements of the eyes are derived partly into the mouth and partly into the nostrils; hence, as Galen is the author, some purged their collyria eye salves not long after inunction, others spat them out.

Felix Platter

LXIX.
With that consumed by a sinuous ulcer, such as frequently arises from a suppurated aegilops a fistula in the inner corner of the eye, or even cut out by iron, the pores open up, accessible on both sides, through which the images of objects travel to the crystalline lens, turned to the side near it.

LXX.
In what manner the pupil, removed to one side or the other, makes vision consistent is clear from Galen, who indeed pronounced that it little hinders the action, although perhaps he did not grant so great an ektasin extension/displacement; nevertheless, to give greater faith to the matter, it would not be alien to have added, in place of a supplement, the argument of Aristotle, by which he refuted the opinion of the ancients regarding the analogy of fire with vision. For he [the ancient] assigned a fiery kinship to it because, at night with eyelids closed, if the eye is struck, fiery sparks would leap out. Aristotle taught that this happens only kat’anaklasin by reflection, with one part of the crystalline, because of a rapid vibration, gaping open and flowing back unevenly into its original seat, the brightness of which, while the portion turned toward it and fixed in its place perceives, the ray shines forth from there into the surrounding darkness, a rival of flame.