Bleb Morphology Using Anterior-Segment Optical Coherence Tomography after Ahmed Glaucoma Valve Surgery with Tenon Capsule Resection

Figure 5

(a) AS-OCT bleb imaging of a female patient in group II at 1 month (hypertensive phase); IOP was 29 mmHg. AS-OCT revealed the presence of encapsulated bleb with dense hyperreflective bleb wall with monocystic fluid-filled bleb cavity; maximal bleb wall thickness was 375 μm, and bleb wall reflectivity was 132. (b) AS-OCT bleb imaging of a male patient in group II at 3 months (hypertensive phase); IOP was 27 mmHg. AS-OCT revealed the presence of a few number of intraconjunctival cysts and minimal conjunctival hydration with dense hyperreflective areas within the bleb cavity (mostly due to fibrosis); the maximal bleb wall thickness was 389 μm, and bleb wall reflectivity was 127.

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