Retinal detachment happens when the retina lifts away from the tissue that supports and nourishes it. This is an eye emergency because the longer the retina stays detached, the greater the risk of permanent vision loss.
Many people first notice new flashes, a shower of floaters, or a dark curtain in their side vision. If that happens, you should contact an eye doctor right away or seek emergency care the same day.
What retinal detachment is
The retina is the light-sensitive layer at the back of your eye. It sends visual signals to the brain, so when it separates from its normal position, those signals stop working properly.
Not every retinal problem is a detachment. Some people first develop a retinal tear, which can then progress to a detachment if fluid moves underneath the retina.
Symptoms that need same-day care
Retinal detachment usually does not cause redness or severe pain. Instead, it often starts with sudden visual changes.
The most common warning signs include:
- New flashes of light
- A sudden increase in floaters
- Blurred or distorted vision
- A gray shadow or curtain moving across your vision
- Loss of side vision
If the center of the retina becomes involved, reading vision and facial recognition can drop quickly. That is why speed matters.
Causes and risk factors
The most common type is rhegmatogenous retinal detachment, which starts with a tear or hole in the retina. This can happen when the vitreous gel inside the eye pulls away with age.
Other types include tractional detachment, often linked to diabetic eye disease, and exudative detachment, which happens when fluid collects under the retina because of inflammation, tumors, or other conditions.
Your risk is higher if you have:
- High myopia
- A prior retinal tear or detachment
- Family history of retinal detachment
- Eye trauma
- Prior cataract surgery or other eye surgery
- Diabetic retinopathy
- Lattice degeneration
How it is diagnosed
An ophthalmologist diagnoses retinal detachment with a dilated eye exam. If the view to the back of the eye is blocked by blood or cataract, an ultrasound may help confirm the diagnosis.
If you are told you have a retinal tear but not a full detachment, treatment may still be urgent because early repair can prevent a more serious separation.
Treatment options
Retinal detachment does not improve with eyedrops or home treatment. The retina has to be repaired with a procedure that reattaches it and seals any tears.
Common treatment options include:
- Laser or cryotherapy. Used for some retinal tears before a full detachment develops.
- Pneumatic retinopexy. A gas bubble is injected into the eye to press the retina back into place.
- Scleral buckle. A silicone band supports the outside wall of the eye.
- Pars plana vitrectomy. The surgeon removes vitreous gel, repairs tears, and may use gas or silicone oil to hold the retina flat.
The best procedure depends on how large the detachment is, whether the macula is involved, and whether there are scar tissue or traction problems. Some people need more than one operation.
Recovery and prevention
Recovery depends on the surgery and on how much vision was affected before repair. If the macula detached before treatment, vision may not return fully even when surgery is anatomically successful.
After surgery, you may need positioning instructions, activity restrictions, eye drops, and several follow-up visits. Your surgeon will also tell you when it is safe to fly, sleep flat, or return to work, especially if a gas bubble was used.
You cannot fully prevent retinal detachment, but you can lower your risk by keeping regular eye exams, protecting your eyes from trauma, and getting urgent care for new flashes or floaters. If you have high myopia or a history of retinal tears, those warning signs deserve extra attention.
Summary
Retinal detachment is an eye emergency that can cause permanent vision loss if treatment is delayed. The main warning signs are new flashes, more floaters, and a dark curtain or shadow in your vision.
Treatment usually involves laser, a gas bubble, a scleral buckle, vitrectomy, or a combination of procedures. If you notice sudden visual changes, contact an eye doctor immediately rather than waiting to see if they improve.
