Collyrium of Alum.
Take of alum, half a drachm; agitate it well together with the white of one egg.
This is the Collyrium of Riverius. It is used in inflammation of the eyes, to allay heat, and restrain the flux of humours. It must be spread upon linen, and applied to the eyes; but should not be kept on above three or four hours at a time.
Domestic Medicine 2nd edition 1785