Floaters and flashes

Most floaters are harmless, but a sudden shower of new ones, or flashing lights, can be the first sign of a retinal tear. The only way to tell the difference is a dilated examination, and a tear treated early usually prevents a detachment.

What's Involved

Dilated retinal examination — A full check of the peripheral retina where tears usually begin.
Widefield imaging — Documented images so new changes can be identified at your next visit.
Urgent referral — Immediate escalation to retinal treatment if a tear or detachment is found.

When to Come In

A sudden increase in floaters — New spots, cobwebs, or a shower of dark specks.
Flashes of light — Brief arcs of light, especially in the dark or with eye movement.
A curtain or shadow — Any dark area moving across your field of vision, which is an emergency.

This content is for general information only and isn't medical advice. Results vary from person to person, so talk with your eye doctor about your own eyes. If you have a medical emergency, call 911.