What Causes Blurred Peripheral Vision?

Tunnel vision is where the driver's field of vision shrinks to the target in front. The field of vision or edge vision is greatly reduced, potentially dangerous to driving safety. When the vehicle is traveling at a high speed, the more the driver looks into the distance, the narrower the field of vision, the attention will then focus on the center of the scene and the two sides will be ignored, which is likely to cause danger. Affected by driver personality, experience, etc., electricity is affected by alcohol. Alcoholism reduces the driver's ability to effectively distribute attention.

Tunnel vision refers to peripheral vision that has lost its central vision, and only a narrow circular tunnel-like area remains in the field of vision.

There are many reasons that can cause tunnel vision. There are physiological factors and objective condition factors.

There are many reasons for tunnel vision, including:

Eye diseases: glaucoma, chromoretinitis ^[1]

Excessive bleeding,

Excessive drinking,

High-speed operation (duration of more than 1s),

Hallucinogenic drugs, especially dissociative drugs,

Extreme fear or pain, usually in the context of a panic attack

Excitement or extreme pleasure, such as a roller coaster, causing a surge in adrenaline in the body

During periods of excessive adrenaline production, such as intense physical confrontation

Exposure to oxygen at a local pressure of 1.5-2 atmospheres produces central nervous system oxygen poisoning, called anesthesia

Sleep deprivation

Use of spectacles: Due to the presence of corrective lenses, spectacle users will experience varying degrees of tunnel vision, providing only a small portion of the appropriate focusing area, and the rest of the field of view is unfocused and blurred. When a person with normal vision only needs to move their eyes far away or far away, the glasses wearer may need to move their entire head to point the glasses at the target object. The spectacle frame also blocks the view of this world, it has a thin opaque border that separates the lens area from other views. Spectacle frames can blur small objects and details in the edge area.