RT Book, Section A1 Effron, David A1 Forcier, Beverly C. A1 Wyszynski, Richard E. A2 Knoop, Kevin J. A2 Stack, Lawrence B. A2 Storrow, Alan B. A2 Thurman, R. Jason SR Print(0) ID 1181039716 T1 Glaucoma T2 The Atlas of Emergency Medicine, 5e YR 2021 FD 2021 PB McGraw-Hill PP New York, NY SN 9781260134940 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1181039716 RD 2024/04/24 AB Acute narrow or closed-angle glaucoma (ACG) results from a physical impedance of aqueous humor outflow. Symptoms range from colored halos around lights and blurred vision to severe pain (described as a headache or brow ache) with nausea and vomiting. IOP is markedly elevated. Perilimbal vessels are injected, the pupil is middilated and poorly reactive to light, and the cornea may be hazy and edematous.