Penetrating surgery (trabeculectomy)
Trabeculectomy is a surgical procedure that has been performed for more than 40 years now. It involves the creation of a full-thickness path through the wall of the eye to relieve intraocular pressure (IOP). This valve is performed in the trabecular meshwork and drains the aqueous humour from within the eye, where a filtering bleb is formed. Though recognized as an effective procedure to control IOP, trabeculectomy does carry risks of serious complications, such as hemorrhage, infection, and hypotonia.
Non-penetrating surgery (deep sclerectomy, canaloplasty)
This type of surgery is akin to trabeculectomy in terms of effectiveness. However, the technique used allows avoiding direct contact between the inside and outside the eye. It consists in finding the natural exit path of the aqueous humour (Schlemm's canal) and maximizing its drainage. It has a lower complications profile compared with trabeculectomy.
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