Retinal detachment occurs when the retina, the light-sensitive tissue lining the back of the eye, separates from the tissue underneath that normally supports and nourishes it. Because the retina is essential for vision, this is considered an ophthalmic emergency. Delayed treatment can increase the risk of permanent vision loss. ^[1][2]

Many people first notice retinal detachment through sudden visual changes rather than pain. Flashes of light, a sudden increase in floaters, a shadow or curtain over part of the visual field, and abrupt blur or loss of vision are classic warning signs. ^[1][2]

What are the symptoms?

Typical symptoms include flashes of light, new or suddenly increased floaters, blurred vision, and the sensation of a dark curtain or shadow moving across the field of vision. These symptoms often affect one eye. Retinal detachment itself is usually painless. ^[1][2]

What causes it?

One common mechanism is a retinal tear that allows fluid to pass underneath the retina. This can happen when the vitreous gel inside the eye changes with age and pulls on the retina. Nearsightedness, eye trauma, prior eye surgery, and certain retinal conditions can increase risk. ^[1][2]

Who is at higher risk?

Higher-risk groups include people with high myopia, prior retinal tears or detachment, a family history of retinal detachment, significant eye trauma, and some people who have had cataract surgery. ^[1][2]

How is it diagnosed?

Diagnosis requires an eye examination, typically including dilation of the pupil so the retina can be viewed clearly. Eye specialists may also use imaging such as ocular ultrasound when the retina cannot be seen well enough. ^[2]

How is it treated?

Retinal tears may be treated with laser or freezing therapy to prevent progression. Once detachment has occurred, surgery is often needed. Depending on the case, treatment may involve pneumatic retinopexy, scleral buckle, vitrectomy, or combinations of these approaches. ^[2]

When should you seek urgent care?

Sudden flashes, a shower of new floaters, a dark curtain over vision, or a sudden drop in vision require urgent same-day ophthalmic assessment. ^[1][2]

FAQ

Is retinal detachment painful?

Usually no. It is typically painless, which is why some people underestimate the urgency. ^[1][2]

Are flashes and floaters always a sign of detachment?

Not always, but sudden new flashes or a marked increase in floaters should be assessed urgently. ^[1][2]

Can vision return after treatment?

Sometimes vision improves substantially, but recovery depends on how quickly repair occurs and whether the macula was involved. ^[1][2]

Who is at higher risk?

People with high myopia, prior eye surgery, previous retinal detachment, eye trauma, or a family history may be at higher risk. ^[1][2]

When is it an emergency?

A curtain-like shadow, sudden vision loss, flashes, or a sudden shower of floaters should be treated as an emergency. ^[1][2]