Tunnelävelys

Tunnelävelys is a Finnish term that can be translated as "tunnel vision" or "tunnel hallucination." It refers to a visual phenomenon where a person's field of vision narrows, causing them to lose peripheral sight. This can lead to a sensation of looking through a tube, hence the name. The effect can be temporary or persistent, depending on the underlying cause.

Tunnelävelys can occur for a variety of reasons, ranging from psychological states to physiological conditions. Stress, anxiety, and panic attacks are common triggers for temporary tunnel vision. In these situations, the body's fight-or-flight response can cause blood vessels to constrict, affecting blood flow to the eyes. Other potential causes include low blood sugar, dehydration, certain medications, and head injuries.

More serious medical conditions can also manifest as tunnel vision. These include glaucoma, optic nerve damage, and retinal detachment. Migraines, especially those with aura, can also be accompanied by temporary visual disturbances, including tunnel vision. In some cases, tunnelävelys can be a symptom of a stroke or other neurological event.

If someone experiences persistent or sudden onset tunnelävelys, it is important to seek medical attention to rule out any serious underlying health issues. Diagnosis typically involves a comprehensive eye examination and potentially other medical tests to determine the cause. Treatment strategies will vary depending on the identified cause.