Mechanisms of filtration in non-penetrating filtering surgeries

Figure 5.2 Schematic representation of the anatomy before (a) and after (b) ab externo trabeculectomy. The arrows represent the site of aqueous humor passage. The pealing of the membrane corresponds to the ablation of the inner endothelium of Schlemm’s canal and the juxtacanalicular trabeculum (c) scanning electron microscopic view of the peeled membrane.