What Retina Specialists Treat and How They Help
Understanding the Retina and Its Role in Vision
The retina is a thin layer of light-sensitive nerve tissue lining the inside back wall of the eye. When light enters through the pupil, it reaches the retina. Specialized cells called photoreceptors convert light into electrical signals. These signals travel through the optic nerve to the brain, which interprets them as images.
Because the retina is essential to sight, damage to this tissue can cause serious vision problems. The retina is thinner than a sheet of paper, making treatment a highly specialized field.
A retina specialist is a medical doctor who first trains as an ophthalmologist (an eye surgeon). After that, they complete one to two additional years of fellowship training focused on diseases and surgery of the retina and vitreous (the clear gel filling the eye).
Retina specialists work in hospitals and clinics. They treat adults and children with conditions ranging from common age-related diseases to rare inherited disorders and eye cancers.
Most people see a retina specialist after a referral from an optometrist or general ophthalmologist. You may be referred if a routine eye exam reveals signs of retinal disease or if you have diabetes requiring specialized monitoring. A referral is also appropriate if you experience sudden vision changes.
Who Is Affected and Risk Factors
Age-related macular degeneration (AMD) is one of the most common reasons people visit a retina specialist. Approximately 19.8 million Americans have some form of AMD (ASRS). This condition primarily affects people over 50, and the risk increases with each decade. AMD damages the macula, the central part of the retina responsible for sharp, detailed vision.
Diabetes is a leading cause of retinal problems. Diabetic retinopathy (damage to retinal blood vessels from high blood sugar) affects approximately 9.6 million people in the United States (Teo et al., JAMA Ophthalmology, 2021). Both type 1 and type 2 diabetes increase the risk, especially when blood sugar, blood pressure, or cholesterol are poorly controlled.
Several other factors can raise the likelihood of developing a retinal condition. Understanding these risk factors can help you stay alert to potential problems.
- High myopia (severe nearsightedness) increases the risk of retinal tears and detachment.
- Previous cataract surgery can change the eye's internal structure and raise retinal detachment risk.
- Eye trauma from injuries or accidents can damage the retina directly.
- Family history of retinal diseases, including inherited retinal dystrophies.
- Hypertension (high blood pressure), which damages small blood vessels in the retina.
- Smoking, which raises the risk of AMD and other vascular eye diseases.
Research shows differences in how retinal conditions affect various groups. Men tend to have a higher incidence of retinal detachment repair than women. Rhegmatogenous retinal detachment (caused by a retinal tear) incidence is higher in White people compared with other racial groups (PMC, 2022). These patterns help retina specialists identify patients who may need closer monitoring.
Signs and Symptoms That Require Attention
Certain symptoms indicate a serious retinal problem requiring immediate care. If you experience any of the following, see a retina specialist or go to the emergency room immediately.
- A sudden increase in floaters (spots or cobweb-like shapes drifting across your vision).
- Flashes of light, especially in your peripheral (side) vision.
- A curtain-like shadow moving across your field of vision.
- Sudden vision loss in one eye.
These symptoms can signal a retinal detachment, which is a medical emergency. Without prompt treatment, a detached retina can lead to severe and lasting vision loss.
Not all retinal problems cause sudden symptoms. Many conditions develop slowly over time. You may notice blurred or distorted central vision, difficulty reading, or dark spots in your central vision. In people with diabetes, vision may fluctuate as blood sugar levels change. These gradual changes should be evaluated by a retina specialist.
If you are receiving treatment from a retina specialist, certain new symptoms should be reported right away. Sudden vision loss, increasing eye pain, or worsening redness after an intravitreal injection (an injection into the eye) could indicate a rare but serious infection called endophthalmitis. Contact your retina specialist immediately if these symptoms occur.
Conditions Retina Specialists Treat
AMD comes in two forms that require different treatment approaches. Dry AMD is the more common type and involves gradual thinning of the macula. In its advanced stage, called geographic atrophy, retinal tissue is progressively lost. Wet AMD is less common but more aggressive. It occurs when abnormal blood vessels grow beneath the retina and leak fluid or blood, damaging the macula rapidly.
Diabetic retinopathy occurs when high blood sugar damages small blood vessels in the retina. In early stages, vessels may leak fluid, causing the retina to swell. In advanced stages, new abnormal blood vessels grow on the retina's surface. Diabetic macular edema (DME) is a related condition where fluid builds up in the macula. Retina specialists manage both conditions with medications, laser treatment, or surgery.
A retinal detachment happens when the retina separates from the tissue beneath it. Without treatment, the detached retina loses its blood supply, leading to severe and lasting vision loss. Retinal tears often precede a detachment and can sometimes be treated before the retina fully separates. The daily incidence of rhegmatogenous retinal detachment repair is approximately 0.46 per 100,000 patients (PMC, 2022).
Retinal vein occlusion (RVO) occurs when a vein carrying blood away from the retina becomes blocked. This causes blood and fluid to leak into the retina, leading to swelling and vision loss. RVO is associated with high blood pressure, diabetes, and glaucoma.
Retina specialists also treat inherited retinal diseases such as retinitis pigmentosa, which causes progressive vision loss. They manage eye cancers such as retinoblastoma in children and ocular melanoma in adults. Patients with severe eye trauma also benefit from a retina specialist's surgical expertise.
Diagnosis and Testing
A visit with a retina specialist may last longer than a typical medical appointment. Plan to be at the clinic for about two to three hours. Your eyes will likely be dilated with special drops so the specialist can see the retina clearly. You may have several types of imaging done before meeting with the doctor.
Retina specialists use advanced imaging technology to examine the retina in detail. These tests provide critical information about retinal health.
- Optical coherence tomography (OCT), which creates detailed cross-section images of retinal layers.
- Fluorescein angiography, where a dye is injected into an arm vein and photographs capture blood flow through retinal vessels.
- Fundus photography, which captures high-resolution images of the retina's surface.
- Ultrasound imaging, used when the retina cannot be seen directly.
Test results help your retina specialist determine the exact type and severity of your condition. OCT imaging can measure fluid beneath the retina to track treatment response. Angiography can reveal abnormal blood vessel growth and location. This information allows the specialist to choose the most effective treatment plan.
Treatment Options
Wet AMD, DME, diabetic retinopathy, and RVO involve abnormal blood vessel growth or leakage driven by vascular endothelial growth factor (VEGF). Anti-VEGF medications block this protein through intravitreal injections (injections directly into the eye).
Eylea (aflibercept) is one of the most commonly used, given every four to eight weeks after loading doses. Eylea HD (high-dose aflibercept) allows extended intervals up to 16 weeks. Lucentis (ranibizumab), the first anti-VEGF approved for eye use, is given every four weeks. Vabysmo (faricimab), a bispecific antibody, can be given every four to 16 weeks. Avastin (bevacizumab) is FDA-approved for cancer but is used off-label in small doses for retinal conditions. It is important to note that anti-VEGF injections are used specifically for wet AMD and are not a treatment for dry AMD.
Geographic atrophy, the advanced form of dry AMD, is a distinct condition from wet AMD and requires different treatment. Two complement inhibitors are FDA-approved specifically for this condition. Syfovre (pegcetacoplan), a C3 complement inhibitor, was the first approved. Izervay (avacincaptad pegol), a C5 complement inhibitor, followed. Both target the complement pathway of the immune system, which contributes to progressive retinal tissue loss. These are given as intravitreal injections and aim to slow the rate of tissue loss. They do not restore vision that has been lost.
Laser photocoagulation (thermal laser treatment) seals leaking blood vessels or destroys abnormal vessel growth. It is commonly used in diabetic retinopathy and retinal vein occlusion. Photodynamic therapy (PDT) uses a light-activated drug injected into the bloodstream. A special laser activates the drug at the retina to close abnormal vessels.
When medications or laser treatments are not sufficient, retina specialists perform surgery. A vitrectomy (surgery to remove the gel inside the eye) allows direct access to the retina. It is used to repair tears, remove scar tissue, or clear blood. A scleral buckle places a silicone band around the eye to support a detached retina. Pneumatic retinopexy uses a gas bubble to push the retina back into place. Cryopexy (freezing treatment) seals retinal tears.
Research continues to expand retina care options. Port delivery systems release medication slowly inside the eye over months, potentially reducing injection visits. Biosimilar medications offer additional versions of existing anti-VEGF drugs. For certain inherited retinal diseases, gene therapy such as Luxturna (voretigene neparvovec) treats a specific genetic form of vision loss.
What to Expect During Treatment
Intravitreal injections are the most common treatment retina specialists perform. The eye is numbed with anesthetic drops or a small injection of numbing medication. The eye surface is cleaned with an antiseptic solution. The medication is injected through the white part of the eye into the vitreous cavity. The injection takes only a few seconds. Most patients feel pressure and mild discomfort.
After an injection, you may experience mild redness, irritation, or a sensation of something in the eye for a day or two. Many patients see small floaters briefly. Your retina specialist will schedule follow-up appointments using OCT imaging to measure retinal changes. Treatment schedules range from every four weeks to every 16 weeks depending on the condition and medication.
Most retinal conditions require ongoing management rather than a one-time treatment. Wet AMD, diabetic retinopathy, DME, and RVO often need repeated injections over months or years. Your retina specialist will adjust the schedule based on your retina's response. Staying consistent with appointments is important because delays can allow conditions to worsen.
Living With a Retinal Condition
If you have a retinal condition, steps you can take include controlling blood sugar, blood pressure, and cholesterol. Quitting smoking reduces the risk of AMD progression and other retinal damage. Wearing sunglasses with UV protection helps shield the retina from light damage.
Your retina specialist may recommend using an Amsler grid to detect central vision changes. By checking the grid regularly with each eye separately, you can notice if lines appear wavy, missing, or distorted. Report changes to your retina specialist promptly for timely treatment adjustments.
For patients with AMD, the Age-Related Eye Disease Study (AREDS2) found that a specific combination of vitamins and minerals can reduce the risk of progression to advanced AMD (NEI). Your retina specialist can advise whether AREDS2 supplements are appropriate for your stage of the disease. A diet rich in leafy green vegetables, fish, and colorful fruits may also support retinal health, though supplements cannot reverse AMD.
When to See a Retina Specialist
Certain symptoms require immediate evaluation. If you experience a sudden increase in floaters, flashes of light, a shadow or curtain spreading across your vision, or sudden loss of vision in one eye, see a retina specialist or go to the emergency room immediately. These may indicate a retinal detachment or other sight-threatening condition.
Ask about a referral to a retina specialist if you have diabetes and have not had a dilated retinal exam in the past year. A referral is also appropriate if you have drusen (small yellow deposits under the retina) or early signs of AMD. Family history of retinal diseases is another reason to seek evaluation. Early detection gives retina specialists the best chance to preserve your vision.
Questions and Answers
A typical injection visit takes about one to two hours total, including check-in, imaging, and the injection. The injection itself lasts only a few seconds. The remaining time covers preparation, eye numbing, and a post-procedure check. Your retina specialist may also review imaging and discuss your treatment plan.
Most retinal conditions are managed rather than eliminated. Treatments such as anti-VEGF injections and surgery can control disease progression, reduce fluid leakage, and help preserve or improve vision. Conditions like AMD and diabetic retinopathy are chronic and typically require ongoing monitoring and treatment. The goal is to maintain the best possible vision and prevent further damage.
Because your eyes are dilated during most retina visits, your vision will be blurry and sensitive to light for several hours. Many patients find it difficult to drive after dilation. Arranging for someone to drive you is a good idea, especially for your first visit.
An ophthalmologist is a medical doctor trained to diagnose and treat all eye conditions, including performing surgery. A retina specialist is an ophthalmologist who has completed additional fellowship training in diseases and surgery of the retina and vitreous. This extra one to two years of training provides expertise for complex retinal conditions.
The eye is numbed before every injection, so most patients feel pressure rather than sharp pain. Some report mild discomfort or brief stinging. After the procedure, mild soreness or a gritty feeling is common for a day or so. If you experience significant pain or sudden vision loss after an injection, contact your retina specialist immediately.