Fig. 39. Deep sclerectomy with viscocanalostomy: goniophotograph of trabeculodescemetic membrane (TDM). The TDM is visible postoperatively through gonioscopic means. This goniophotograph reveals pigment in the trabecular meshwork with the clear membrane located anterior to the pigment. Blood may reflux into this intrascleral cavern during gonioscopy but rapidly clears. The red arrow points to a goniopuncture site.