Introductory Book

...deprived [of] the powder of pepper, [put] to the nostrils so that the feverish person may use [it]. Through another way, if anyone while sleeping dreams through [amiguras], [use] the seed of the poppy and the foam of silver, and dilute it with the white of an egg, and place it upon a plaster upon his forehead, and he will sleep. [Use] the seed of henbane, bind its leaves to the temples; give the juice of lettuce to be drunk, which [you] will give for a solution.

Concerning the Eyes, Chapter

The eyes are made the most excellent [part] of the body, in the discipline of light, [and] the way [of sight]. [It] is distinguished from death... [as] they effect the eyes... but do not note that... [as] it is from the dew of the soul, and is of the water of the sense... [it reaches] the brain, which is the sense, [it] is cold and humid, just as is water. And the thalamus optic nerve/inner chamber of the brain, which is from the beginning and between the middle, and on both sides is cold and humid... of the whole eye, indeed, [it] has a sensitive instrument... which is cold and humid from the humor... and that which goes out is humid and clean, and it passes through the aforementioned ways... [to] the thalamus, which obtains the water of the brain... [it] is rapt from the anterior part, which [is] what ought to be seen... [it is] animated, for the anterior part is for the sense of sight, and is very subtle; [it is] held by the nerve which [goes] from the vision to the brain... and through all these, [they are] the nerves of the body, [and] it is rooted that you look well, [and] it preserves [the] magnitude itself more

than in other animals. For both eyes, there is not one way of seeing; it is constrained, as it is directed that some of the nerves see, [and] what the other does not see. Furthermore, [concerning] those whose malice is such that [they] see, [the] subject matter is cast [upon them], so that [if] a menstruating woman [is looked at], [the eye] is infected by a certain rust. Great doubt is applied to the vision, just as the sickness [of] the ray... seeing with open eyes. The nature of the pole had that from the darkness of the night, which [one] used to see as if in clear light; if [it] is not [there], [the] darkness is brought to the eyes, as in others it is accustomed to be. Sometimes [they see] further, [and] others not except by applied charms. The eyes of the sun are rendered, the drop upon the eyes, [by the] moderator of the clemency of God’s mercy... Pliny [says] that in the eyes the soul lives at the same time, not in the intervening seven [layers/humors]... [God] provides to the eyes and [their] three humors, of which one is vitreous, another crystalline, [and] the other is watery... [and the eye] is round so that it may suffer less lesion, because the round form is slower to be damaged. Because of the middle, as Pliny says, the pupil is windowed, it is so abstruse [in its] way that [that] small pupil renders the whole image of man... the vision is restored [by] applying to the eyes [cold things], not hot, because heat dissolves the pain. [If] the pain
Concerning pain from blood

is from the blood, then it appears white [in the] eye, [from] the blood [pressing] [the] veins, [and] the veins of the forehead swell, [and] [if] bloodletting is done, it is worth [much] for [removal].