Quick Answer: Retinal detachment happens when the retina, the light-sensing layer at the back of the eye, pulls away from the tissue that supports it. It is usually painless, can cause permanent vision loss if untreated, and needs urgent examination.

What are the warning signs?

• A sudden shower of new floaters
• Flashes of light, often at the edge of vision
• A shadow or curtain spreading across part of your vision
• A sudden drop in vision

Who is at higher risk?

People with high short-sightedness, previous eye surgery or retinal tears, a family history, or a significant eye injury.

How is it treated?

A retinal tear may be sealed with laser or freezing; a detached retina generally needs surgery such as vitrectomy. See our guide to retinal detachment warning signs and our retina care page.