Floaters are visual perceptions caused by changes in the vitreous body, the transparent gel that fills the inside of the eye. Its fibres can thicken and cast small shadows on the retina.
How they manifest themselves
They appear as dark spots, strands or cobwebs that move when you look at them and are more visible against light backgrounds.
Why they arise
They are often linked to natural ageing, but can be associated with myopia, diabetes or eye surgery.
The role of the vitreous body
The transparency of the vitreous allows light to reach the retina unobstructed. When its structure changes, visual disturbances may occur.
When to consult a specialist
If symptoms occur suddenly or if you see flashes of light, it is essential to rule out retinal tears or detachments.
