In refractory glaucoma or conditions resulting in extensive conjunctival scarring, such as previously failed glaucoma filtering procedures, trauma, or previous ocular surgery, trabeculectomy has a notoriously poor success rate. In… Click to show full abstract
In refractory glaucoma or conditions resulting in extensive conjunctival scarring, such as previously failed glaucoma filtering procedures, trauma, or previous ocular surgery, trabeculectomy has a notoriously poor success rate. In such situations, glaucoma drainage devices (GDDs) appear to be a better choice[1,2] because they create an alternate pathway by shunting aqueous from the anterior chamber to an equatorial plate through a long tube resulting in a posterior bleb.[3]
               
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