Imaging of trabeculectomy blebs with Visante anterior segment optical coherence tomography after digital ocular compression

Abstract

Digital ocular compression may be useful in maintaining bleb morphology when it is used for 6 months postoperatively. Response to ocular compression as assessed by bleb morphology was different.

Meibomian gland loss due to trabeculectomy

“…Bleb avascularity often causes the bleb wall to be thin and brittle [2,7,24,25]. Therefore, noncontact meibography was performed using a mobile, pen-shaped meibography device (Meibom Pen; Japan Focus Co., Tokyo, Japan) after the upper and lower eyelids had been inverted to avoid compression of the blebs.…”

Comparative optical coherence tomography study of differences in scleral shape between the superonasal and superotemporal quadrants

“…Anterior segment optical coherence tomography (OCT) has often been used to observe the anterior ocular segment [6,7]. Therefore, the aim of our preliminary study was to consider the potential impact of scleral shape on the outcome of trabeculectomy.…”

Changes in filtering bleb morphology after bleb-related infection

“…On the basis of our findings we speculate that bleb size and bleb wall thickness are indicative of a failing bleb. Ultrasound biomicroscopy and anterior segment optical coherence tomography have shown that bleb size, intra-bleb structure, and intra-bleb reflectivity are closely associated with bleb function [10,11].…”

“…Dysfunction of the filtering bleb, however, is suspected to contribute to uncontrolled IOP in most cases, because inflammatory reactions at the bleb site cause vasodilation, production of inflammatory cytokines, and other problems, resulting in fibrosis at and around the filtering bleb [8,9]. It is well known that bleb morphology is highly correlated with IOP control [10,11], and that bleb size and intra-bleb reflectivity have predictive value for IOP after filtering surgery.…”