Diurnal changes in OCT-A-measured VD in glaucoma patients were small and clinically insignificant. These changes were not associated with IOP changes.

This is the first report in which peripapillary vessel density is analyzed using OCTA technology for this entity. OCTA could confirm the diagnosis and has the potential to assist with the diagnosis and evaluation of progression of ONHD.

Purpose: To report our experience using a Tenon cyst autograft in the management of tube exposure post Ahmed glaucoma valve (AGV) implantation. Methods: This is a retrospective case series. Results: Four patients who underwent tube exposure repair using Tenon cyst autograft were identified in our tertiary care center. The duration between initial AGV implantation and tube exposure ranged between 3 and 36 months with a mean of 16 months (±14.35 mo). All patients were followed postoperatively for a range of 4 to 24 months with a mean of 11.75 months (±9.03 o) and all remain exposure free at last follow-up. Conclusion: The use of a Tenon cyst autograft for the surgical repair of a tube exposure is valuable, as it involves using autologous scar tissue that is available in eyes that have undergone AGV implantation. The patch autograft is technically easy to harvest, and represents a significantly lower cost when compared with other available options.

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