Folio 83v - the nature of man, continued.
the eyes are, of all the senses, the most closely allied to the soul. For they reflect every aspect of the intellect. As a result, confusion or joy within the soul is visible in the eyes. The eyes are the same as lights and are called 'lights', lumen, because light pours forth from them, or because from the beginning they hold light enclosed within them, or because they take in light from outside and reflect it to create vision. The pupil, pupilla, is the middle point of the eyes, in which the power of seeing resides. Because you see small images at this point, it is called pupilla, a word for 'little children'. For little boys are called pupilli. Many people call the pupil pupilla, 'the little girl', because it is pure and undefiled, as girls are. Physicians say that those who are dying lack for three days before death those pupils which we see in the eyes; if they are not visible, it is a clear sign that the patient's condition is hopeless. The circle by which the white of the eye is separated from the pupil, defined by its black colour, is called the corona, because its roundness enhances the circumference of the pupil like a garland, corona. Some call the upper lid, vertex, of the eye, volvus, from its similarity to the leaf of a door, valva. The eyelids, palpebre, fold over the eyes. The word comes from palpitatio, 'frequent, rapid movement', because the lids are always in motion. For they move quickly to meet each other, so that by their constant motion they refresh the vision. The eyelids are fortified by a rampart of hairs, so that if anything should fall into the eyes when they are open, it is repelled; also that, with the lids closing in sleep, the eyes should rest hidden as if wrapped up. At the extreme edges of the eyelids, in the places where they touch each other when closed, lashes stand in line, providing protection for the eyes, lest they should be easily hurt by things blundering into them and be damaged as a result. These lashes are also designed to prevent contact with dust or any heavier matter, or, in addition, soften the air itself by filtering it, making vision clear and bright. Some think that the word for tears, lacrime, comes from the phrase, laceratio mentis, 'rending of the mind'; others
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