Book 6
6
6 Now the foregoing are subjects of minor importance. But there are grave and varied mishaps to which our eyes are exposed; and as these have so large a part both in the service and the amenity of life, they are to be looked after with the greatest care. Now directly ophthalmia sets in, there are certain signs by which it is possible to foretell the course of the disease. For if lacrima-tion swelling of the eyelids and a thick rheum appear all at once; if that rheum is mixed with tears, if the tears are not hot, but the rheum is white and bland, and the swelling is not hard, there is then no apprehension of a prolonged illness. But if lacrimation is profuse and hot, rheum scanty, swelling moderate, and that in one eye only, the case will be a prolonged one, but without danger. And that kind of ophthalmia is the least painful, but is seldom relieved before the twentieth day, and at times lasts two months. As it subsides, the rheum begins to be white and bland, mixed with tears. But if both eyes are attacked simultaneously, the duration may possibly be shorter, but there is danger of ulceration. Now rheum, when it is dry and sticky, gives rise to some pain, but subsides sooner unless ulceration is set up. If there is great swelling without pain and dryness, there is no danger; if there is dryness, accompanied by pain, there is generally ulceration, and at times the result is that the eyelid sticks to the eyeball. There is danger of similar ulceration in the eyelids or in the pupils when, in addition to great pain, the tears are salt and hot; or if, even after the swelling has subsided, there continues for some time a flow of tears mixed with rheum. The case is worse still when the rheum is pallid or livid, the tears hot and profuse, the head hot, and pain shoots from the temples to the eyes, causing wakefulness at night; in these circumstances generally the eyeball ruptures, and we must pray that there may be ulceration only. When the eyeball has ruptured inwards a touch of fever is beneficial. If the eyeball protrudes after rupturing outwards, there is no remedy. If something white has developed from the dark part of the eye, it persists for a long while; but if it is rough and thick, some vestige remains even after treatment. According to Hippocrates, the oldest authority, the treatment of the eyes includes bloodletting, medicaments, the bath and wine; but he gave little explanation of the proper times and reasons for these remedies, things of the highest importance in the art of medicine. There is no less help, often, in abstinence and clysters. Now at times inflammation seizes the eyes, and there is pain in them together with swelling, and there follows a flow of rheum, sometimes rather profuse or acrid, sometimes in both respects rather moderate. In such a case, rest in bed and abstinence are the chief remedies. From the first day, therefore, the patient should lie in bed in a dark room, and at the same time he should refrain even from talking; take no food at all, and if feasible not even water, or at any rate the least possible amount. If the pains are severe, it is better that he should be bled on the second day, but when urgent this may be done even on the first day, at any rate if the veins on the forehead are swollen, and if there is superfluity of matter in a robust patient. But if the attack is less violent, it requires less drastic treatment: the bowel should be clystered, but only on the second or third day. But moderate inflammation requires neither blood-letting nor clystering, it is sufficient for the patient to stay in bed and fast. A prolonged abstinence, however, is not necessary in patients with ophthalmia, for it may render the rheum thinner, and more acrid; hence some of the lightest kind of food should be given on the second day, such as seems likely to render the rheum thicker; for instance, raw eggs; in a less severe case, porridge also or bread soaked in milk. On the following days, according as the inflammation subsides, additional food may be taken, but of the same class; certainly nothing salted, or acrid, or likely to make the rheum thinner should be consumed, and nothing but water drunk. Such a dietetic regimen is exceedingly necessary. But from the first day, saffron 4 grams and the finest wheat flour 8 grams should be made up with white of egg to the consistency of honey, then spread on lint and stuck on the forehead, in order that by compressing the veins the flow of rheum may be checked. If saffron is not at hand, frankincense has the same effect. Whether it is spread on linen, or on wool, makes no difference. There should be smeared over the eyeball, of saffron as much as can be taken up in three fingers, of myrrh in amount the size of a bean, of poppy-tears the size of a lentil: these are pounded up in raisin wine, and applied on a probe to the eyeball. Another composition having the same efficacy is made up of: myrrh 0.33 grams, mandragora juice 4 grams; poppy-tears 8 grams; rose-leaves and hemlock seeds 12 grams each; acacia 16 grams; gum 32 grams. These applications are made by day; at night, in order better to assure sleep, it is not inappropriate to apply above the eye, the crumb of white bread soaked in wine; for this at once represses rheum, and absorbs any flow of tears, and prevents the eye from becoming glued up. If this application, owing to the great pain in the eye, seems oppressive and hard, eggs, both the white and the yolk, are poured into a vessel, a little honey-wine added, and the mixture stirred with the finger. When thoroughly mixed, soft well-combed wool is soaked in it and the wool then applied over the eyes. This is both a light application and one which by cooling checks rheum, yet does not quite dry it up, and so the eye is not allowed to become glued up. Boiled barley-meal, mixed with boiled quinces, is also a suitable application; nor is it inconsistent with the treatment, even to put on a pad of wool wrung as hard as possible out of water, if the attack is a lighter one, or out of vinegar and water, if it is more severe. The former applications are to be bandaged on, so that they do not fall off during sleep; the latter it suffices to lay one because it can be changed readily by the patient himself, and when it becomes dry, it must be wetted again. If the affection is so severe as to prevent sleep, for a time one of the remedies which the Greeks call anodyna should be administered, an amount the size of a vetch to a child, that of a bean to a man. For the eyeball itself there is no appropriate application on the first day, unless the inflammation is only moderate, for by such the flow of rheum is often stimulated rather than lessened. From the second day, even when the disease is severe, the direct application of medicaments is proper, when blood has been let or clystering applied, or after it has become evident that neither is needed.
