Surgical opening of the trabecular meshwork in congenital glaucoma. [G. gonia, angle, + tome, incision]
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go·ni·ot·o·my .gō-nē-'ät-ə-mē n, pl -mies surgical relief of glaucoma used in some congenital types and achieved by opening the canal of Schlemm
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n.
an operation for congenital glaucoma (see buphthalmos). A fine knife is used to make an incision into Schlemm's canal from within the eye. It is the first stage of goniopuncture.
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go·ni·ot·o·my (go″ne-otґə-me) [gonio- + -tomy] an operation for types of glaucoma characterized by an open angle and normal depth of the anterior chamber; it consists of the opening of Schlemm canal under direct vision secured by a contact glass.Medical dictionary. 2011.