Are floaters and flashes normal after retinal detachment surgery?

What's normal

AAO's retinal detachment guidance states that floaters and flashing lights may persist for weeks after surgery. Blood cells, pigment, and debris stirred up by the repair drift inside the eye and cast shadows until they clear.

Small gas bubbles that break off the main bubble also look like dark floaters near the end of absorption, and they bounce distinctly when you move your head.

For most people these become less noticeable over time as the eye clears and the brain learns to filter them out.

Background floaters and flashes for weeks are common; a sudden increase at any point is an emergency sign.

When it stops being normal

This is the symptom to take most seriously after a detachment repair. NEI lists a lot of new floaters, flashes of light in one or both eyes, and a dark shadow or curtain in your field of vision as signs of a medical emergency. AAO gives the same red flags: sudden flashing lights, many new floaters, a shadow in peripheral vision, and a gray curtain. After a repair these can mean a new tear or a re-detachment, and StatPearls notes that proliferative vitreoretinopathy causes failure in roughly 8 to 10 percent of primary repairs. Call your retina surgeon immediately rather than waiting for your next appointment.