trench: A broad and not so deep an Ulcer, is called Coil oma: That which cometh in the Circle Iris, is called Argemon, or Vlcus Coronale: Finally, that which is deep and hard, is called Epicayma, and Egcayma.
The knowledg of Ulcers is easie, for they may be seen: If the Ulcer be in the Cornea, there will be a smal white blemish in the black of the Eye; if in the Adnata, there wil be a smal white blemish in the white of the Eye, because the Veins of the Tunicle Adnata are ful of blood.
The Ulcer of the Eyes are dangerous, and hard to be cured; but more in the Cornea than in the Adnata. An Ulcer in the Pupilla is more dangerous, because after it is cured, it wil leave a Scar, which wil hinder the perspicuity of the Cornea, and so the sight wil be hurt; and if the whol Tuni∣cle be corroded, the Watery Humor wil flow out, and the Uvea start forth.
The Cure of this Disease, as of other Ulcers, is, By clensing and drying means; but they must be very gentle by reason of the tenderness of the part, and exquisitness of the sence. But you must first use such things as revel and hinder the flux or humors from the Eyes; as in Ophthalmy either old or new, were declared. And if there be an Inflamation with it, you mix must things that are proper for that. With which also you may use things that asswage pain, if there be any.
These things do moderately dry and clense: Sugar, Honey, Saffron, Mirrh, Frankinsence, Aloes, Sarcocol, Tutty, and Ceruss; of which you may make these following Medicines:
Take of Barley and Foenugreek Water boyled, four ounces: the best Honey half an ounce: or of the Syrup of dried Roses, one ounce: Make a Collyrium to wash the Eyes often.
Take of Vervain and Plantane Water, of each two ounces: Sugar candy half an ounce. Mix them for a Collyrium.
Take of the Water of Honey distilled in Balneo, and of Rose water, of each equal parts. Or,
Take a hard Egg peel'd, cut it in two pieces, and taking out the Yolk fill the hollow with the pouder of Sugar candy; tie it fast, and hang it in a Wine Celler, and you shall have a Water drop from it, which is excellent to clense the Eyes without pain.
But if you wil have it stronger mix the Pouder of Mirch with your Sugar candy.
Montanus highly commends this Pouder following:
Take Twenty Whites of new laid Eggs, put them in a pewter dish in the Sun till they are dry: then pouder them finely with as much Sugar; and this pouder put into the Eyes, doth much good without causing pain.
In the Progress of this Disease, if you will clense and dry more, put to the former Medicines the white Troches of Rhasis, Frankinsence, Aloes, Mirrh, Sarcocol, or the like, but in a smal quantity lest it be too sharp, and also mix them with Milk, white of an Eg, some Mucilages, and other Ano∣dines, or things that mitigate and asswage pain.
Tutty is the best, for it causeth no pain, and dryeth and healeth; therefore Collyriums, or Un∣guents are good that are made thereof. And chiefly the Oyntment prescribed in the cure of Oph∣thalmy, which hath in it a great quantity of Tutty.
This following is very clensing, drying, and healing.
Take of Sarcocol steep'd in Rose Water, Ceruss and washed Aloes, Mirrh, and Tutty prepared, of each half a dram: Sugar candy one dram: With the Mucilage of Gum Traganth drawn with Rose Water, make a Collyrium, with which anoint the Eye-lids.