Abstract
A brief educational piece clarifies open‑angle versus angle‑closure glaucoma mechanisms, risk factors, and screening considerations. It provides practical pointers for early detection and referral.
Author Contributions
Copyright © 2020 Tala Kassm, et al.

Competing interests
The authors have declared that no competing interests exist.
Citation:
Caption
74 year old male with a history of multiple retinal detachment repairs with silicone oil and subsequent Ahmed tube shunt placement for uncontrolled pressure now presents with recurrent uncontrolled pressure in the right eye (seen below).
Intraocular pressure is not controlled with maximum topical and oral medications. Is silicone oil blocking the tube? Would oil removal and tube flushing improve his eye pressure?