Tunneilmaisusta

Tunneilmaisusta, also known as tunnel vision, is a condition characterized by a narrowed field of vision, often resulting in the perception of only a small portion of the visual field. This phenomenon can occur due to various factors, including medical conditions, psychological states, and environmental influences.

Medically, tunnel vision can be caused by conditions such as glaucoma, cataracts, or retinal detachment. These conditions affect the eye's ability to transmit visual information to the brain, leading to a restricted visual field. Psychologically, tunnel vision can be a symptom of anxiety, stress, or depression, where an individual's focus becomes narrowed, often on a specific worry or concern.

Environmental factors can also contribute to tunnel vision. For instance, prolonged exposure to bright lights or screens can cause visual fatigue, leading to a narrowed field of vision. Similarly, certain medications, such as antidepressants or antihistamines, can have side effects that affect vision.

Tunnel vision can significantly impact daily activities, affecting tasks that require peripheral vision, such as driving or sports. It is essential to consult a healthcare professional if experiencing persistent tunnel vision, as it may indicate an underlying medical condition that requires treatment.