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The loss of peripheral vision while retaining central vision is known as tunnel vision, and the loss of central vision while retaining peripheral vision is known as central scotoma [citation needed]. Peripheral vision is weak in humans, especially at distinguishing detail, color, and shape.
The optic nerve is a bundle of millions of fibers in the retina that sends visual signals to the brain. Damage and death of these nerve cells, or neurons, leads to characteristic features of optic neuropathy. The main symptom is loss of vision, with colors appearing subtly washed out in the affected eye.
Retinitis pigmentosa (RP) is a member of a group of genetic disorders called Inherited Retinal Dystrophy (IRD) that cause loss of vision. [ 1 ] Symptoms include trouble seeing at night and decreasing peripheral vision (side and upper or lower visual field). [ 1 ] As peripheral vision worsens, people may experience " tunnel vision ". [ 1 ]
Tunnel vision can be caused by: Glaucoma, a disease of the eye. [ 2 ] Retinitis pigmentosa, a disease of the eye. [ 3 ] Blood loss (hypovolemia) Alcohol consumption. [ 4 ] In addition, the vision becomes blurred or double since eye muscles lose their precision causing them to be unable to focus on the same object.
Visual or vision impairment (VI or VIP) is the partial or total inability of visual perception. In the absence of treatment such as corrective eyewear, assistive devices, and medical treatment, visual impairment may cause the individual difficulties with normal daily tasks, including reading and walking. [ 6 ]
“However, glaucoma is actually the most dangerous in terms of driving since it affects the peripheral vision — and often people are not aware of the loss of peripheral vision until it is too ...
Greyout. Simulated stages of a greyout. A greyout is a transient loss of vision characterized by a perceived dimming of light and color, sometimes accompanied by a loss of peripheral vision. [1] It is a precursor to fainting or a blackout and is caused by hypoxia (low brain oxygen level), often due to a loss of blood pressure.
Having a narrower field of vision . If you’re suddenly struggling with your peripheral vision—which means you might feel like you're looking into a tunnel, only able to see what's straight in ...
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