De praecipius visus symptomatis eorumque causis Physica & Medica contemplatio

and its conformation. The crystalline humor, packed on all sides by two liquids, is not only for the sake of nutrition (which has seemed so to almost everyone, albeit at a slightly more forced moment; for since the most sagacious nature could have accomplished the same thing in another and indeed easier way, it appears it had another goal for its work) but so that the refraction of the images flowing in through various media might be accumulated and be more illustrious, and might be perceived by the spirit with a certain commensuration. Thus, the rays, partly dashed against the cornea and partly against the aqueous humor, are refracted, and so finally strike the crystalline, and at length the vitreous. Hence, by frequent repercussion, the image stabilized in the crystalline mirror is received by the spirit.

LXII.
Dense and conglomerated light strings the eye more validly and penetrates in a straight path without refraction, because its force exceeds the faculty of the organ. Therefore, it strikes the crystalline with a sudden impulse, and while it strives to disperse the spirit poured over it on all sides, from the mutual struggle there follows a shaking and jumping of the subjected parts, whence, with the structure disrupted, the humors are confused among themselves, and there occurs a prysamoddōs anatasia a distension in the manner of burning/swelling of the whole organ, the immediate occasion of blindness. Hence, those blinded in such a way will never be seen to have an intact eye structure, so that some dislocation of the pupil and the crystalline does not appear.

LXIII.
For that humor, although quite solid, is split by the vehemence of the light, and having had its continuity dissolved, it becomes rarefied, and thus, overwhelmed, it partly slips into the albugineous (aqueous) and partly into the vitreous. Hence follows the dissolution of the temperament, from which the faculty itself, having attained perfection, proceeded into act, according to the analogy