When Should Flashes and Floaters Be Checked?

Floaters are small shadows cast on the retina by clumps in the eye's gel. Long-standing, stable floaters that drift with eye movement are usually harmless.

However, seek a same-day dilated retinal examination if you notice a sudden increase in floaters, new flashes of light (especially in dim light), or a curtain-like shadow across your vision. These can indicate a retinal tear, which is quick to treat with laser but can progress to retinal detachment if ignored.

People with high myopia, diabetes or a history of eye surgery should be especially prompt. When in doubt, get checked — the examination is painless and the reassurance (or early treatment) is worth it.

This article is general education, not a diagnosis. Always consult an eye specialist for personal advice.

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