The idea of practical physick in twelve books ... / written in Latin by John Johnston ... ; and Englished by Nich. Culpeper, Gent. ... and W.R.

Article, I. Of Crassities, Nebula, and Albugo.

THe Diseases of the Tunicle Cornea, are, Crassities or a certain kind of thickness, Nebula, (or a little Cloud) Albugo, (or a white spot in the Eye) Pustules or Pushes, Ʋlcers, Wounds, and Pain.

I. Crassities (or thickness) Is an extream drying of the substance thereof, and therewith∣al there Joyned a certain Corrugation or winkling. It is known by this, that (as it were) in the superficies thereof there appear∣eth a little bloud, and the sick persons see as through smoak. It ariseth either from the incautelons and careless Application of Cold Remedies, and this especially after an Oph∣thalmy; or else from Gross and thick humors, that insinuate themselves. In the Cure, there is to be commended the Juyce of Salendine pressed forth, and instilled into the Eyes drop by drop.

II. Nebula or the little cloud, as the Color of the Tunicle Cornea, altered and changed by a subtile Humor flowing forth. That which is prevalent in this case, is the powder of Mar∣garites prepared, in the water of Roses and Fenel; and the Cataplasm of Platerus, in his second Book and 19. Observation.

III. Albugo or (as they cal it) Lencoma, is a white spot, rendering the Cornea (tunicle) so thick, that there is denied al manner of pas∣sage unto the visibl species. It ariseth either from a Cicatrix (or scar) after a wound, or an ulcer; and then the Cure is difficult in those that are ancient; but more easy in children and young people. It is performed,

• 1. By the appliing of emmollents or mollifiers.
• 2. By abstersion, where the watter of Rosemary flow∣ers dropped into the eyes, and the fat of the fish Mustela, have their place and use.

Or else it procedeth from flegm gathered together be∣twixt its lapps; and then the Cure is easy. And to this end the purpose excellent good is the colyry that it prepared of Lapis Calami∣naris thrice burnt and twice extingwished in wine vinegar, one scruple hereof, Myrrh, lead burnt and washed, of each half ascruple, of Oriental Saffron five grains, opium eleven grains, of burnt brass four scruples, the decoc∣tion af fenugreek one ounce; al these throughly beaten together and incorporated upon a mar∣ble stone or Porphyry.