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Updated: Jul 25, 2026

In Vivo Protocol of Controlled Subconcussive Head Impacts for the Validation of Field Study Data
Published on: April 18, 2019
Ocular trauma from the "knockout game"
1Colorado Retina Associates, PC, 8101 E Lowry Boulevard, Suite 210, Denver, CO 80230, USA.
Abstract:
The "knockout game" is a new form of urban violence receiving much attention in local and national media. Apart from the obvious head trauma, eye injuries may be subtle and overlooked. This report brings awareness of potential eye damage with this type of assault. This report is of a young woman, victim of the knockout game, who sustained a submacular hemorrhage. Beyond a neurologic evaluation for anyone knocked unconscious following the knockout game, patients should be counseled regarding potential ocular injury and encouraged to seek eye care promptly should symptoms develop.
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