**3. The use of oct in glaucoma**

The evaluation of the postoperative effectiveness of glaucoma surgery is a well validated use of the anterior OCT [6, 8, 13].

The anterior OCT allows a detailed representation of the bleb architecture, giving information of the shape and functionality of a postsurgical bleb. Moreover, with ASOCT it is possible to observe if a bleb is functioning well and to know details about the wall and the internal architecture of the bleb.

Reports in literature show that there are a lot of aspects of the OCT conjunctival appearance which can be used to assess the functionality of the blebs: the internal aspect (diffuse or flat) [14], the internal bleb reflectivity (low reflectivity or high) or the wall thickness [15, 16].

There is also another interesting use described in literature, described by Mastropasqua et al.: the authors stated that the application of ASOCT for studying bleb modifications before and after bulbar massage is useful as it is possible to observe an increase of the bleb-wall thickness, intraepithelial microcysts, and the fluid-filled cavity area [13]. The study by Guthoff et al. [17], instead, analyzes the effect of the needling on the bleb ASOCT appearance.
