Redout
Redout is a medical condition characterized by a reddening of the visual field due to an excess of blood in the capillaries of the eyes. It is often experienced by pilots and astronauts who are subjected to high G-forces.
Causes[edit | edit source]
Redout is caused by a negative G-force, which drives blood towards the head. This can occur during certain maneuvers in flight, such as a rapid descent or a loop. The increased blood pressure in the head can cause the capillaries in the eyes to expand, leading to a reddening of the visual field.
Symptoms[edit | edit source]
The primary symptom of redout is a reddening of the visual field. This can be accompanied by other symptoms such as headache, nausea, and dizziness. In severe cases, it can lead to retinal detachment or stroke.
Prevention and Treatment[edit | edit source]
Prevention of redout involves avoiding maneuvers that cause negative G-forces. This can be achieved through proper flight training and the use of G-suits. Treatment involves reducing the blood pressure in the head, which can be achieved by returning to a normal posture and reducing the G-forces.
See also[edit | edit source]
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Contributors: Prab R. Tumpati, MD
