The “Tunnel Effect” in vision occurs when speed increases, narrowing your field of view. This blog explains two scientific reasons behind this effect:
- Pupillary Constriction: As speed rises, your pupils constrict to focus. This reduces peripheral vision and causes the tunnel effect.
- Stress-Induced Tunneling: Higher speeds also increase stress levels, which can trigger the tunnel effect, further narrowing your vision.
Check out the image below to better understand how the Tunnel Effect impacts your vision. It provides a clear visual of the phenomenon.

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