There is likewise a kind of dry lippitude, which the Greeks call xerophthalmia[ GC ]. In this the eyes neither swell, nor run, but are only red, and heavy with some pain, which is commonly slight, also an itching, and the eye-lids without any hardness stick together in the night-time by means of a very troublesome gum: and the less violent in its degree this species is, so much the longer does it continue.
In this disorder it is necessary to walk much, to take much exercise, to bathe often, and sweat in the bagnio, to use much friction. The proper diet is neither such as is filling, nor over acrid, but the middle kind betwixt these. In the morning, when it is evident that the concoction is completed, it is not improper to gargle with mustard, and alter that to rub the head and face a considerable time.
Rhinion.
The collyrium best adapted to this case is that called rhinion. Which contains of myrrh p. i. *. poppy tears, acacia juice, pepper, gum, each p. i. *. blood-stone, Phrygian stone, lycium, scissile stone, each p. i. *. calcined copper p. iv. *. The pyxinum also is suitable for the same purpose.
But if the eyes be scabrous, which mostly happens in the angles, the rhinion mentioned already may be serviceable. For the same purpose that may be useful, which contains, of rasile verdigrease, long pepper, poppy tears each p. ii. *. white pepper, gum, each p. iv. *. cadmia washed, ceruss, each p. vi. *. Basilicon of Euelpides. However, there is none better than that of Euelpides, which he called basilicon. It contains of poppy tears, ceruss, Asian stone, each p. ii. *. gum p. xiii. *. white pepper p. iv. *. saffron p. vi. *. psoricum[(7)] p. xiii. *. Now there is no simple, which by itself is called psoricum; but a certain quantity of chalcitis and a little more than half its quantity of cadmia are rubbed together with vinegar; and this being put into an earthen vessel, and covered over with fig leaves, is deposited under ground for twenty days, and being taken up again it is powdered, and thus is called psoricum. The basilicon collyrium too is generally allowed to be proper for all disorders of the eyes, that are not treated by mild medicines.
But when compound medicines are not to be had, both honey and wine mitigates an asperity in the angles. These and a dry lippitude too are relieved by an application of bread, softened with wine, over the eyes. For since there is generally a humour, which exasperates sometimes the eye itself, sometimes the angles, or eyelids; by this application, if any humour is discharged, it is drawn away, and if it happens to be lodged near, is repelled.
Of a dimness of the eyes.
A dimness comes upon the eyes, sometimes from a lippitude, at other times even without that, from old age, or weakness. If the disorder proceeds from the relics of a lippitude, the collyrium called asclepias is serviceable. Likewise that, which is composed of crocomagma.
The collyrium which is called diacrocou[ GD ] is composed peculiarly for this. It contains of pepper p. i. *. Cilician saffron, poppy tears, ceruss, each p. ii. *. psoricum, gum, each p. iv. *.
But if it arises from old age, or weakness, it may be proper to anoint with the best honey, and cyprine and old oil. But it is most expedient to mix together one part of balsam, and two of old, or cyprine oil, and three parts of the most pungent honey. The medicines prescribed above for a dimness from a lippitude, and those mentioned before for diminishing cicatrices, are useful in this case too.