CHAP. VIII. Of the Hydatis, or fatness of the Eye-lids.
THe Hydatis is a certain fatty substance, like a piece of fat,* 1.1 seated and lying under the skin of the upper eye-lid. It is a disease incident to children, who are of a more humid nature: wherefore it is a soft and loose tumor, making the whole eye-lid, which it possesseth, oedematous; so that as if depressed with a weight, it cannot be lifted up. It hath its name, for that it hath as it were a bladder distended with a whayish humor, which kinde of fault is observed by Galen in the liver. Those who are thus affected,* 1.2 have their eyes look red, and flow with tears, neither can they behold the Sun, or endure the light. The cure is performed by cutting off the superfluous substance,* 1.3 not hurting the neighbouring parts; and then presently put some salt into the place whence it was taken out (unless the vehemency of pain hinder) that so the place may be dried and strengthe∣ned, and the rest of the matter (if any such be) may be consumed, and hindred from grow∣ing again. Lastly, you shall cover the whole eye with the white of an egg dissolved in rose-water, or some other repercussive.