Those drifting specks and cobwebs are often simply the marks of time, formed as the gel-like vitreous inside your eye slowly shrinks and clumps with age. For many, they become background noise, noticed only when staring at a bright sky or white wall. Yet the line between harmless nuisance and urgent warning can be thin, and your vision is far too valuable to leave to guesswork.

When you see a sudden storm of new floaters, bright lightning-like flashes, or a shadow creeping over your sight, that is not the moment to wait, search symptoms, or hope it passes. It is the moment to be seen. A prompt eye exam can reveal whether your retina is safely intact or silently tearing away. Listening to these subtle signals, and acting quickly, can mean the difference between a scare you forget—and sight you can never regain.