What to Expect Before, During, and After an Eye Injection
When Eye Injections Are Recommended
Eye injections are most often used to treat conditions that affect the retina, the light-sensitive layer at the back of your eye. Wet age-related macular degeneration is one of the most frequent reasons we recommend injections, as it causes abnormal blood vessels to leak fluid under the retina. Diabetic macular edema and diabetic retinopathy are also commonly treated with eye injections, helping to reduce swelling and leaking blood vessels caused by diabetes.
Other conditions that may benefit from eye injections include retinal vein occlusion, which happens when a vein in the retina becomes blocked, and uveitis-related macular edema, which is swelling caused by inflammation inside the eye. We may also use injections to treat choroidal neovascularization from causes such as high myopia or inflammatory conditions, postoperative cystoid macular edema after eye surgery, and geographic atrophy in certain cases.
The medications we inject work to stop or slow down disease processes that can damage your retina and lead to vision loss. Anti-VEGF medications, the most common type we use, block a protein that causes abnormal blood vessel growth and leaking. By reducing this protein, the medication helps dry up fluid, decrease swelling, and prevent further damage to the delicate structures of your retina.
- They reduce fluid buildup in and under the retina
- They stop new abnormal blood vessels from forming
- They help stabilize existing vision and may improve it in some cases
- They treat key pathways that drive leakage and abnormal vessel growth
Our eye doctor will recommend injections if you have active retinal disease that threatens your central vision and if other treatments are not appropriate or have not worked well enough. The decision to start injections depends on detailed imaging of your retina, including tests that show fluid leakage, swelling, or abnormal blood vessel growth. We consider your overall health, your other medical conditions, and how well you can keep up with a treatment schedule.
Not everyone with retinal disease needs injections right away. Some patients can be monitored closely with regular exams and imaging to watch for changes. We may begin injection therapy when we see signs that your condition is getting worse or when vision loss begins to occur.
Most injections for wet age-related macular degeneration and retinal swelling use anti-VEGF medications, which have become the gold standard for treating these conditions. These medications target vascular endothelial growth factor, the protein responsible for abnormal blood vessel formation. Each medication works in a similar way but may have slightly different durations of action or specific benefits for certain conditions. In addition to anti-VEGF drugs, we may use complement inhibitors for geographic atrophy in select patients, or steroid medications for inflammation-related macular edema.
Steroid options may be an injection or an implant, and can raise eye pressure and speed cataract formation in some patients. We generally reserve these for specific cases where anti-VEGF medications are not suitable or when inflammation is the primary problem. We carefully select the medication based on your individual diagnosis, your response to previous treatments, and any eye pressure concerns.
Preparing for Your Eye Injection Appointment
Before your first injection and at regular intervals during treatment, we perform imaging tests to monitor your retina. Optical coherence tomography, or OCT, takes detailed cross-sectional pictures of your retina to show fluid, swelling, and the thickness of retinal layers. This painless test takes only a few minutes and helps us decide if an injection is needed and how well previous injections have worked.
- OCT imaging to measure retinal thickness and detect fluid
- Fundus photography to document the appearance of your retina
- Sometimes fluorescein angiography to see blood flow and leakage patterns
- Visual acuity testing to track changes in your vision
In most cases, you should continue taking your regular medications as prescribed, including blood thinners and aspirin. We do not usually ask you to stop these medications before an eye injection because the risk of stopping them often outweighs any small increase in bleeding during the procedure. Minor surface bleeding is common, and serious bleeding is rare.
Let our office know about all medications you take, including over-the-counter drugs and supplements. If you use blood thinners, we will note this in your chart, but we will still proceed with the injection in most situations. Always check with the doctor who prescribed your blood thinner before making any changes to your medication schedule.
Plan to have someone drive you to and from your appointment, as your vision may be blurry for a few hours after the injection. Bring your insurance card, a list of your current medications, and sunglasses to wear afterward if your eyes are dilated that day, since bright light can be uncomfortable. If you wear contact lenses, remove them before coming to the office or bring a contact lens case and solution so you can take them out before the procedure. Do not put contact lenses back in until at least the next day, or until the eye feels back to normal, unless your doctor advises otherwise.
- Arrange for a driver to take you home
- Bring sunglasses for light sensitivity if you will be dilated
- Wear comfortable clothing and avoid heavy makeup around your eyes
- Arrive a few minutes early to complete any necessary paperwork
We encourage you to ask questions about your treatment plan so you understand why injections are recommended and what to expect going forward. Important topics to discuss include how often you will need injections, what improvements or stability you can expect in your vision, and what signs should prompt you to call the office between appointments. Understanding the treatment schedule and long-term plan helps you prepare mentally and logistically for ongoing care.
You may also want to ask about the specific medication we will use, whether there are alternatives, and what happens if the injections do not improve your condition. We are here to answer all your questions and make sure you feel comfortable with your treatment.
What Happens During the Eye Injection Procedure
Before the injection, we apply numbing drops to your eye several times to ensure you are comfortable. These topical anesthetic drops work quickly to reduce sensation on the surface of your eye. We also use povidone-iodine or a similar antiseptic solution to clean the eye and the area around it, reducing the risk of infection. The antiseptic can sting briefly and may cause irritation for several hours afterward.
Some patients barely feel anything during the injection, while others notice a slight pressure or touch. The numbing drops make the procedure much more comfortable. We give the drops several minutes to take full effect before we proceed, and in some cases we may also use anesthetic gel or a small anesthetic injection for added comfort.
You will recline in a comfortable exam chair, and we will ask you to look in a certain direction to expose the injection site. We use a small instrument called a speculum to gently hold your eyelids open so you do not need to worry about blinking. The speculum may feel a bit unusual, but it does not hurt, and it ensures the eye stays still and safe during the injection.
- We position your head on a headrest for stability
- A speculum holds your eyelids open comfortably
- We ask you to look away from the injection site
- We keep the environment calm and give you clear instructions
The injection is given through the white part of your eye, called the sclera, into the vitreous cavity in the center of the eye. You may feel a brief sensation of pressure or touch, but most patients do not describe it as painful. Some people see a temporary shadow or blurry area right after the injection, which is from the small volume of medication in the eye and goes away quickly.
We use a very fine needle, and the injection itself takes only a second or two. Throughout the procedure, we talk to you and let you know what is happening. Taking slow, deep breaths can help you stay relaxed.
The entire appointment, including preparation and the injection itself, usually takes about fifteen to thirty minutes. The actual injection happens in just a few seconds. Most of the time is spent preparing your eye and making sure everything is ready for a safe procedure.
After the injection, we may check the pressure inside your eye, especially if you are at risk for pressure spikes, and ask you to wait a few minutes before you leave. This allows us to make sure your eye is responding well and gives you a chance to ask any last-minute questions.
Recovering After Your Eye Injection
Your vision will likely be blurry right after the injection for several reasons. If your eyes are dilated that day, the dilating drops will affect how clearly you see. The numbing drops, the antiseptic, and the small volume of medication in the eye can all temporarily affect your vision. You may also notice shadows, floaters, or a feeling of haziness. These effects typically improve within a few hours as the medication disperses and the effects of the drops wear off.
- Blurry vision from drops and surface irritation
- Floaters or shadows from the medication or small bubbles
- Mild light sensitivity if you have been dilated
- A gritty or scratchy feeling that fades quickly
We generally recommend that you take it easy for the rest of the day after your injection, although you do not need strict bed rest. We may recommend avoiding strenuous exercise that day, and you should avoid swimming, hot tubs, and getting non-sterile water in the eye for at least 24 to 48 hours to reduce the risk of infection. You should also avoid eye makeup for 24 hours. You can perform normal daily activities like reading, watching TV, and light walking as long as you feel comfortable.
Do not rub your eye, even if it feels a bit irritated. Rubbing can increase the risk of infection or disturb the medication. If you need to touch the area around your eye, wash your hands thoroughly first.
Some offices prescribe antibiotic drops, but many do not because careful antiseptic preparation is the main infection prevention step. Follow the exact instructions you are given. Do not use leftover antibiotic drops from a previous treatment unless we specifically tell you to do so.
Preservative-free artificial tears can help soothe mild irritation from the antiseptic and are commonly used after injections. You can continue your other regular eye drops, such as those for glaucoma or dry eyes, unless we tell you otherwise. If you have any questions about timing or which drops to use, call our office for clarification.
Most patients can return to work and regular activities the day after their injection, once vision has cleared enough to function safely. If your job involves heavy physical labor or dusty environments, you may want to wait an extra day or discuss the timing with us. Driving is generally safe once your vision returns to your baseline and you feel confident behind the wheel.
- Resume light activity the same day if vision allows
- Return to work the next day for most jobs
- Wait 24 to 48 hours before swimming or using hot tubs
- Drive only when your vision is clear enough to do so safely
Recognizing Normal Side Effects vs. Warning Signs
Mild discomfort, redness, and scratchiness are all normal after an eye injection and usually resolve within a day or two. Your eye may feel irritated or slightly sore, similar to having an eyelash in your eye. This sensation comes from the speculum holding your eyelids open and the small injection site itself. Over-the-counter artificial tears can help soothe any dryness or irritation.
A small amount of bleeding on the white of your eye, called a subconjunctival hemorrhage, is also common and looks more alarming than it is. This bright red spot is similar to a bruise and will gradually fade over one to two weeks. It does not affect your vision or the success of the injection.
Seeing new floaters after an injection is very common and usually harmless. These floaters may look like small dots, circles, or shadows, and they often come from small bubbles or disturbance in the vitreous. Most floaters settle to the bottom of the eye or become less noticeable within a few days.
- Small floaters that move when you move your eye
- Mild redness that fades over a few days
- A sensation of pressure or fullness that improves quickly
- Slight tearing or watering
While most injections go smoothly, it is important to be aware of uncommon but serious complications. We monitor carefully for these and take steps to minimize risk, but they can occur in rare cases.
- Endophthalmitis, a severe infection inside the eye
- Retinal tear or retinal detachment
- Vitreous hemorrhage, or bleeding inside the eye
- Significant or sustained eye pressure elevation that can lead to glaucoma
- Cataract or lens injury, which is rare
- Intraocular inflammation
Certain symptoms are not normal and require urgent attention. Sudden, severe pain that gets worse instead of better, markedly worsening blurred vision, a rapid increase in floaters, a curtain or shadow blocking your vision, or flashing lights can all signal serious complications like infection or retinal detachment. Thick discharge, increasing redness with vision loss, or nausea and vomiting with severe headache or eye pain can indicate a pressure spike or infection. Severe pain is not expected and should prompt same-day evaluation.
Any symptom that worsens after the first 24 hours, or any severe symptoms at any time, should be assessed urgently. If you experience these, contact our office immediately or the on-call ophthalmology service if available. If you cannot reach us, go to the nearest emergency room.
If you notice any concerning changes or are unsure whether a symptom is normal, it is always better to call and ask. We would rather reassure you that everything is fine than have you wait with a problem that needs attention. Contact us if your vision decreases suddenly, if pain becomes severe or does not improve, or if you develop any new symptoms that worry you.
Also reach out if you develop signs of an allergic reaction, such as severe swelling of the eyelids, itching, or rash around the eye. These are uncommon but should be evaluated promptly.
Frequently Asked Questions
Most patients report that the injections are far less painful than they expected. The numbing drops we use beforehand make the eye very comfortable, and the injection itself usually feels like mild pressure rather than sharp pain. Any discomfort typically lasts only a second or two, and many people feel anxious beforehand but are relieved at how straightforward the procedure is.
The number of injections varies depending on your condition and how well your eye responds to treatment. Some patients need injections every four to eight weeks initially, then may be able to space them out further if the disease stabilizes. Others require ongoing regular injections to keep their condition under control. We tailor your treatment schedule based on your imaging results and vision changes at each visit.
We recommend arranging a driver because your vision may be too blurry immediately after the injection to drive safely. The combination of any dilating drops, numbing medication, and the injection itself can affect your sight for several hours. Having someone else drive ensures you get home safely and gives your eye time to settle.
Yes, you will be fully awake and alert during the injection. We do not use sedation for this procedure because it is quick and well tolerated with just numbing drops. Being awake allows you to follow our instructions, such as looking in a certain direction, which helps us perform the injection safely and accurately.
Missing an injection can allow fluid to build up again and may lead to vision loss that could have been prevented. If you need to reschedule, contact us as soon as possible so we can find the next available appointment. Keeping to your injection schedule is very important for protecting your vision, so we work with you to make appointments as convenient as possible.
For many retinal conditions, eye injections are among the most effective treatments available, and alternatives may be limited. Laser treatment may be considered in specific cases, particularly for certain types of diabetic retinopathy or retinal vein occlusion, but it does not work as well for conditions like wet macular degeneration. In select settings, sustained-delivery options or surgical interventions for complications may be discussed. We recommend injections when they offer the best chance of preserving or improving your vision, and we will discuss any other options that might be appropriate for your situation.
Next Steps and Follow-Up
If you have been scheduled for an eye injection or have questions about whether this treatment is right for you, our office is here to guide you through every step. Contact us anytime you have concerns or need clarification about your care plan, your treatment schedule, or what to watch for between visits. We will work together to protect your vision.