n. the destruction of part of the *ciliary body (see cycloablation) by freezing. It is used to reduce intraocular pressure in the control of glaucoma.
n. the destruction of diseased or unwanted tissue based on freezing. For example, prostate cryotherapy involves two alternate freeze-thaw cycles using specialized needles introduced into the prostate through the perineum to destroy cancer cells, either after failed radiotherapy or as a primary treatment. Freezing is performed by the infusion of argon gas through the needles and thawing by the infusion of helium. See also cyclocryotherapy; cryosurgery; hypothermia.... cryotherapy
Health Encyclopedia