What is myodesopsia or "eye floaters"?
Myodesopsia, commonly known as "eye floaters," is a visual phenomenon in which floating objects are perceived in the visual field. They can appear as dots, rings, filaments, cobwebs, or other shapes that "dart away" when you try to focus on them. This condition is related to the degeneration of the vitreous humor, the gel-like substance that occupies about two-thirds of the eye, located between the lens and the retina.
Causes of myodesopsia
The vitreous humor is composed of 99% water and 1% collagen, hyaluronic acid, sugars, soluble proteins, vitreous cells, and vitreous fibrils. With age, its gel-like structure deteriorates: a process of liquefaction begins around the age of 20-30, becoming evident after 40-50 years of age (even earlier in nearsighted people, around 30-40 years). The collagen fibers fragment, forming filaments that float in the liquefied areas of the vitreous.
These filaments cast shadows on the retina, especially in bright light conditions, and are perceived by the brain as "eye floaters" in front of the eyes. Over time, this degeneration tends to progress.
How to manage myodesopsia?
Currently, there are no definitive cures to eliminate myodesopsia. The condition often fades over time because the brain learns to "ignore" the floaters. Staying well-hydrated, eating a varied and balanced diet, and maintaining a regular lifestyle are part of good habits for eye health.
When to see an eye doctor
If you notice "eye floaters" for the first time or see an increase in them, have your vision checked. Contact an eye doctor or an eye emergency room immediately if the floaters appear suddenly, increase rapidly, or are accompanied by flashes of light or a shadow covering part of the visual field: these can be signs of a retinal detachment.
Learn more on our page dedicated to myodesopsia.