What it means and why
The vitreous is the gel-like material inside the eye behind the crystalline lens and in front of the retina. Changes within it can cast moving shadows perceived as floaters. These are different from dust on a spectacle lens.
Some changes are longstanding, but new symptoms need context. The vitreous has relationships with the retinal surface, so a sudden change in floaters, especially with flashes or missing vision, cannot be assumed to be a harmless ageing effect.
A worked example
Teaching scenario: cleaning the glasses does not remove a drifting spot that follows eye movement. That observation may help describe a floater, but cannot determine whether the retina is safe. Sudden new floaters, flashes or a curtain require urgent assessment.
What it does not tell you
Do not use a clean lens, normal chart score or lack of pain as a substitute for an examination when warning symptoms appear.
THINK IT THROUGHShould a sudden burst of new floaters wait for the next routine eye test?
No. Arrange urgent eye assessment, particularly if flashes or any curtain-like shadow accompany it.
Sources & reading notes
Page updated:
- National Eye Institute · Retinal detachment ↗ Public health information
Useful for general health explanations and safety guidance; individual assessment and local advice still matter.