Retinal Detachment
A retinal detachment is a serious eye condition that occurs when the retina separates from the back wall of the eye. Because the retina is responsible for sensing light and sending visual signals to the brain, a detached retina cannot function properly. Without prompt treatment, retinal detachment can lead to permanent vision loss.
Retinal detachment is considered an eye emergency. Early diagnosis and treatment provide the best chance of preserving and restoring vision.
What Is the Retina?
The retina is the thin, light-sensitive layer of tissue lining the inside of the back of the eye. It works much like the film in a camera, capturing images and transmitting them to the brain through the optic nerve.
The retina is responsible for:
- Sharp central vision
- Peripheral (side) vision
- Color perception
- Night vision
When the retina separates from its underlying support tissue, it loses access to oxygen and nutrients necessary for normal function.
Types of Retinal Detachment
Rhegmatogenous Retinal Detachment
This is the most common type of retinal detachment.
It occurs when:
- A retinal tear or hole develops.
- Fluid passes through the opening.
- The retina lifts away from the back of the eye.
Tractional Retinal Detachment
Tractional detachments occur when scar tissue on the retinal surface contracts and pulls the retina away from the eye wall. Common causes include:
- Advanced diabetic retinopathy
- Proliferative vitreoretinopathy
- Certain inherited retinal disorders
Exudative (Serous) Retinal Detachment
This type develops when fluid accumulates beneath the retina without a retinal tear.
Possible causes include:
- Inflammation
- Tumors
- Central serous chorioretinopathy
- Certain vascular conditions
What Causes Retinal Detachment?
Several factors can increase the risk of retinal detachment.
Posterior Vitreous Detachment
As the vitreous gel ages and separates from the retina, traction can occasionally cause a retinal tear.
Lattice Degeneration
Areas of retinal thinning may predispose patients to retinal tears.
High Myopia (Nearsightedness)
Patients with significant nearsightedness have a higher lifetime risk of retinal detachment.
Eye Trauma
Blunt or penetrating eye injuries can lead to retinal tears and detachments.
Previous Eye Surgery
Prior cataract surgery may slightly increase the risk.
Family History
A family history of retinal detachment may increase susceptibility.
Symptoms of Retinal Detachment
Symptoms often develop suddenly and should never be ignored.
Common warning signs include:
- Sudden onset of floaters
- Flashes of light
- A curtain or shadow moving across vision
- Loss of peripheral vision
- Blurred vision
- Sudden decrease in vision
The curtain-like shadow often progresses as the detachment enlarges.
A retinal detachment is usually painless.
How Is Retinal Detachment Diagnosed?
A retinal specialist diagnoses retinal detachment through a comprehensive examination and specialized testing.
Dilated Retinal Examination
This is the most important part of the evaluation.
The doctor examines:
- Retinal tears
- Retinal holes
- The extent of detachment
- Vitreous changes
Optical Coherence Tomography (OCT)
OCT can help evaluate involvement of the macula, which is important in determining prognosis.
Ultrasound Imaging
Ultrasound is especially useful when the retina cannot be visualized because of:
- Dense cataracts
- Vitreous hemorrhage
- Corneal abnormalities
How Is Retinal Detachment Treated?
Treatment depends on the type, size, and location of the detachment.
Laser Retinopexy
Small retinal tears without detachment or with an isolated peripheral retinal detachment may be treated with laser to create a barrier around the tear.
Cryopexy
Freezing treatment may be used to seal retinal tears.
Pneumatic Retinopexy
During this office-based procedure:
- A gas bubble is injected into the eye.
- The bubble presses against the retinal tear.
- Laser or cryotherapy seals the retina into place.
Scleral Buckle Surgery
A silicone band is placed around the outside of the eye to relieve vitreous traction and support the retina.
Pars Plana Vitrectomy
Vitrectomy is commonly performed for many retinal detachments.
During surgery:
- The vitreous gel is removed.
- Retinal traction is relieved.
- Retinal tears are treated.
- A gas bubble or silicone oil is placed inside the eye to support healing.
Patients often need to maintain a specific head position afterward.
What Is Recovery Like?
Recovery depends on the type and severity of the detachment.
Patients may need:
- Specific positioning instructions
- Activity restrictions
- Eye drops
- Multiple follow-up visits
If a gas bubble is used:
- Air travel is prohibited until the bubble resolves.
- Certain types of anesthesia should be avoided.
Vision often improves gradually over weeks to months.
What Is the Prognosis?
The prognosis depends on:
- How quickly treatment occurs
- Whether the macula detached
- The complexity of the detachment
- The presence of scar tissue
When treated promptly, many retinal detachments can be successfully repaired.
If the macula remains attached before surgery, the chances of preserving excellent vision are generally higher.
Even with successful surgery, some patients may not regain all of their pre-detachment vision.
Living After Retinal Detachment
Patients who have experienced retinal detachment should:
- Attend all scheduled follow-up visits.
- Learn the warning signs of retinal tears.
- Seek urgent evaluation for new flashes or floaters.
- Protect their eyes from injury.
- Monitor the fellow eye, which may have an increased risk of future detachment.
Prompt attention to new symptoms can help preserve vision.
Frequently Asked Questions
Is retinal detachment an emergency?
Yes. Retinal detachment is a vision-threatening emergency that requires prompt evaluation and treatment.
Can a detached retina heal on its own?
No. Most retinal detachments require treatment to reattach the retina and preserve vision.
Will my vision return to normal after surgery?
Many patients experience substantial visual improvement, but outcomes depend on how quickly treatment occurred and whether the macula was involved before repair.
More Information
For additional patient information, visit the American Society of Retina Specialists Retinal Detachment Page
References
- American Society of Retina Specialists (ASRS) – Retinal Detachment
- American Academy of Ophthalmology – Retinal Detachment
- National Eye Institute – Retinal Detachment
- EyeWiki – Retinal Detachment