Anterior Segment Optical Coherence Tomography Imaging of Conjunctival Filtering Blebs after Glaucoma Surgery
Figure 1
Spectral domain- (SD-) and time domain- (TD-) OCT assessment of a cystic filtering bleb. Slit-lamp biomicroscopy of a functioning cystic bleb after Ex-PRESS implant (a and b). Bleb images (taken at the same point) as obtained with SD-OCT (Optovue and Spectralis, resp.) (c and d) and TD-OCT (Visante OCT) (e). SD-OCT presents a higher resolution with a more detailed visualization of bleb-wall layers, inner cystic spaces, and the limit between scleral bed and bleb, with respect to TD-OCT. On the other hand, SD platforms seem to have less tissue penetration than TD- OCT (arrows).
