A filtering operation for glaucoma by creation of a fistula between the anterior chamber of the eye and the subconjunctival space, through a subscleral excision of a portion of the trabecular meshwork. [trabecula + G. ektome, excision]
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tra·bec·u·lec·to·my trə-.bek-yə-'lek-tə-mē n, pl -mies surgical excision of a small portion of the trabecular tissue lying between the anterior chamber of the eye and the canal of Schlemm in order to facilitate drainage of aqueous humor for the relief of glaucoma
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n.
an operation for glaucoma, one part of which is the removal of a small segment of tissue from part of the wall of Schlemm's canal. This area is known as the trabecular meshwork. Trabeculectomy allows aqueous fluid to filter out of the eye under the conjunctiva, thus reducing the pressure inside the eye.
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tra·bec·u·lec·to·my (trə-bek″u-lekґtə-me) [trabecula + -ectomy] creation of a fistula between the anterior chamber of the eye and the subconjunctival space by surgical removal of a portion of the trabecular meshwork, performed to facilitate drainage of the aqueous humor in glaucoma.Medical dictionary. 2011.