valonväläyksiä

Valonväläyksiä refers to brief, intermittent flashes of light perceived by an individual. These phenomena are often experienced in the peripheral vision and can vary in intensity, duration, and color. While they can be startling, valonväläyksiä are usually harmless and temporary, often disappearing on their own.

The exact cause of valonväläyksiä is not always clear, but they are commonly associated with changes in the vitreous humor, the gel-like substance that fills the eyeball. As a person ages, the vitreous humor can shrink and pull away from the retina, the light-sensitive tissue at the back of the eye. This pulling can stimulate the retinal cells, leading to the perception of flashes.

Other potential causes include eye strain, migraines (particularly visual aura preceding a migraine headache), or certain medications. In rarer cases, persistent or sudden onset of significant valonväläyksiä could indicate more serious underlying eye conditions, such as retinal detachment or inflammation within the eye.

If valonväläyksiä are experienced, especially if they are new, sudden, accompanied by floaters (specks or cobwebs drifting in the vision), or a shadow in the peripheral vision, it is advisable to consult an eye care professional. A comprehensive eye examination can help determine the cause and rule out any serious conditions, ensuring appropriate management or reassurance.