Loss of Peripheral Vision or Tunnel Vision

Eyes | Ophthalmology | Loss of Peripheral Vision or Tunnel Vision (Symptom)


Description

The tunnel vision or loss of peripheral vision with retention of central vision is resulting in a constricted circular tunnel-like field of vision. And by extension, to any point of view too narrow. Also called tubular vision. Peripheral vision or side vision is the ability to see objects and movement outside the line of sight. Peripheral vision is the work of bar nerve cells located largely outside the macula (the center) of the retina. The bars are also responsible for night vision or low light, but not colour sensitive.

Causes

Tunnel vision can be caused by other factors: blood loss (hypovolemia), consumption of alcohol causes tunnel vision, retinitis pigmentosa, an eye disease, hallucinogenic drugs, particularly losdisociativos, glaucoma, an eye disease, extreme fear or anxiety, most often in the context of a panic attack, exposure to oxygen at a partial pressure of 1. 5 - 2 atmospheres above, producing central nervous toxicity oxygen from the system, particularly during diving, prolonged exposure to air pollution, among other.

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