Eye Pain After Intravitreal Injection: What Is Normal and What Is Not
Why Intravitreal Injections Are Performed
Intravitreal injections allow medication to reach the back of the eye in high concentrations, targeting the retina directly while minimizing effects on the rest of the body. These injections are used to treat conditions that threaten central vision, often on a recurring basis over months or years.
Several serious retinal conditions respond well to intravitreal injection therapy. The most common include wet age-related macular degeneration, a condition where abnormal blood vessels leak fluid beneath the central retina, as well as diabetic macular edema, which is swelling in the retina caused by diabetes, and retinal vein occlusion, which occurs when veins in the retina become blocked.
Most of these medications work by blocking a protein called vascular endothelial growth factor, commonly referred to as VEGF, which drives the abnormal blood vessel growth and leakage that threatens vision.
Intravitreal injections are among the most frequently performed eye procedures worldwide. Many patients receive them every four to eight weeks for an extended period depending on how their condition responds to treatment. The frequency and duration of your injection schedule will be tailored to your specific diagnosis and response over time.
Before the injection, your doctor numbs the eye surface with anesthetic drops and carefully cleans the eyelids and surrounding skin with an antiseptic solution. A small device is used to hold the eyelids open comfortably during the procedure.
A very thin needle is then guided through the white of the eye into the vitreous cavity, the gel-filled space inside the eye, and the medication is delivered in a matter of seconds. You may feel pressure but should not feel sharp pain. Antibiotic drops are applied afterward, and the entire visit from preparation to completion typically takes about 10 to 15 minutes.
Normal Symptoms After Your Injection
Mild discomfort after an intravitreal injection is expected and does not mean something has gone wrong. Most normal symptoms begin within the first few hours, peak early, and gradually improve over the following day or two.
A dull ache or mild soreness in and around the eye is the most common experience after an intravitreal injection. This comes from the needle passing through the eye wall, the antiseptic used to clean the eye surface, and the small volume of fluid now inside the eye. The ache typically peaks within the first few hours and fades within 24 to 48 hours.
Most patients find this discomfort manageable without medication. If the aching bothers you, an over-the-counter pain reliever may help. Your doctor will advise you on which option is safest given your individual health history.
Many patients describe feeling as though something is stuck on the surface of the eye after their injection. The antiseptic solution used to sterilize the eye can temporarily irritate the surface cells, and the lid holder can also disturb the natural tear film.
Preservative-free artificial tears are very effective at relieving this sensation and can be used as often as every hour if needed on the first day. The gritty feeling typically resolves within one to two days as the eye surface settles and the tear film restores itself.
A bright red patch on the white of the eye near the injection site is called a subconjunctival hemorrhage, which means blood has collected under the clear membrane that covers the white of the eye. This happens when a small surface blood vessel breaks during the injection. It looks alarming but is completely harmless and does not affect your vision.
The red patch will naturally fade over one to two weeks as the body reabsorbs the blood, often changing to a yellow or orange color as it clears. No treatment is needed. Cold compresses on the closed eye during the first day may help limit the size of the patch, but are not required.
It is very common to notice new floaters, small dark shapes, bubbles, or a large dark circle drifting across your field of vision right after an injection. These are usually caused by tiny air bubbles introduced with the medication or by the medication itself as it disperses through the vitreous gel. They tend to move around as your eyes shift position.
Post-injection floaters are temporary and typically disappear within a few hours to a few days. A single round dark spot that shifts as you move your eyes is almost always an air bubble, which dissolves on its own. However, a sudden shower of many new floaters, particularly when accompanied by flashing lights, is a warning sign that needs prompt evaluation.
Warning Signs That Require Urgent Attention
While most discomfort after an intravitreal injection is mild and short-lived, certain symptoms can indicate a complication developing inside the eye. Recognizing these warning signs early is critical to protecting your vision.
The following symptoms are not part of normal post-injection healing and require same-day or emergency evaluation. Contact your eye doctor right away or seek emergency care if you experience any of these.
- Severe eye pain that worsens over time rather than improving
- Vision that becomes worse compared to immediately after the injection
- Redness that increases after the first one to two days
- Eyelid swelling that is getting worse rather than better
- Yellow or green discharge coming from the eye
- New or worsening sensitivity to light developing after the first day
Any single one of these symptoms is enough reason to reach out to your care team. Do not wait for your next scheduled appointment if something feels wrong.
Endophthalmitis is a serious infection inside the eye and is the most significant risk associated with intravitreal injections. If bacteria enter the eye during the procedure, they can multiply in the days that follow and cause rapid, severe damage to the internal structures of the eye.
This infection is rare, but the consequences of delayed treatment can be severe, including permanent vision loss. Endophthalmitis typically develops two to seven days after the injection and usually causes deep, throbbing pain that feels distinctly different from the mild aching that is normal after the procedure. It is often accompanied by increasing redness and worsening vision. If you suspect an infection, do not wait. Contact your doctor's emergency line day or night.
If you experience mild discomfort that extends beyond two days, a gritty feeling that is not improving, or redness that is stable and not getting worse, call your eye doctor's office during business hours. Most practices offering intravitreal injections reserve same-day appointments for post-injection concerns, and your care team genuinely wants to hear from you rather than have you worry at home.
If the office is closed and you have severe or rapidly worsening pain, sudden significant vision loss, or increasing swelling with discharge, go to the emergency room or call your doctor's after-hours answering service immediately. Never wait until morning if symptoms are escalating through the night.
Managing Discomfort at Home
Simple self-care steps in the first day or two after your injection can make a meaningful difference in your comfort level and help your eye heal well. Knowing what to do, and what to avoid, keeps recovery on track.
Plan to rest your eyes for the remainder of the day following your procedure. Avoid strenuous physical activity, heavy lifting, and bending with your head below your waist. You may watch television or use a phone or computer if it does not bother your eye, though many patients find it more comfortable to simply close their eyes and relax.
The numbing drops used during the procedure wear off within 30 to 60 minutes. You may notice the aching increase at that point. This is a normal part of the recovery and does not mean something has gone wrong. A cold compress applied gently to the closed eye can provide relief during this time.
Pain should decrease steadily over the first 24 to 48 hours. Steady daily improvement in your comfort level is a reassuring sign that healing is progressing normally. Continue using preservative-free artificial tears for dryness and any prescription drops exactly as directed by your doctor.
Avoid swimming, hot tubs, and dirty or dusty environments for at least 48 hours after the injection to lower the risk of infection. You may shower as usual, but try to keep water from spraying directly into the treated eye. Always wash your hands before touching your face or applying drops.
Keeping a simple log of how your eye feels after each injection is a practical tool, especially if you receive injections on a regular schedule. Note your pain level at the time of the injection, a few hours later, and on each following day. Record any new floaters, changes in vision, or changes in redness.
Over time, you will come to know your own typical post-injection experience. Some patients feel very little after each treatment, while others experience one to two days of mild soreness every time. Understanding your personal pattern makes it much easier to recognize when something unusual is happening and when to reach out for help.
Reducing Your Risk of Complications
While intravitreal injections are performed with careful antiseptic technique to minimize infection risk, there are steps you can take before and after the procedure to support a safe recovery.
Tell your doctor about any signs of eye infection in the days before your scheduled injection, including discharge, crusting, or unusual redness. Your doctor may recommend postponing the injection if active infection or significant inflammation is present on the eye surface.
Arrive with a clean face, free of eye makeup, lotions, or creams in the area around the eye. These products can harbor bacteria that could be introduced near the injection site. If you forget, the care team can clean the area, but arriving prepared makes the process easier and safer for everyone.
During the injection, try to keep your eyes still and look in the direction your doctor instructs. Breathe steadily, and let the care team know right away if you feel lightheaded or anxious. They want you to be as comfortable as possible throughout the procedure.
After the injection, do not rub or press on the eye. Rubbing can irritate the injection site and introduce bacteria from your fingers. If your eye feels itchy or gritty, use artificial tears instead. Wearing sunglasses when you go outside can help reduce light sensitivity and protect the eye from airborne debris.
Never hesitate to call with questions after your injection. Your care team performs these procedures regularly and understands that patients sometimes need reassurance or guidance. A brief phone call can put your mind at ease or identify a concern before it becomes more serious.
Before you leave your appointment, save the office number and after-hours emergency line in your phone. Ask the staff specifically which symptoms should prompt a call and which ones are expected. Having this information ready before discomfort begins makes it much easier to respond quickly and calmly if something feels off.
Frequently Asked Questions
These are some of the most common questions patients have about recovering from an intravitreal injection.
Mild aching that peaks within the first few hours and improves each day is normal. Most patients feel close to their baseline within 24 to 48 hours. If your pain is getting worse rather than better after the first day, or if it is severe enough to interfere with sleep or daily activity, contact your eye doctor the same day rather than waiting to see if it resolves on its own.
A bright red patch on the white of the eye after an injection is almost always a subconjunctival hemorrhage, which is surface bleeding that is harmless and self-resolving. It is not a sign of internal bleeding or damage to your retina. The concern arises when redness is spreading, is accompanied by pain that is increasing, or appears alongside discharge or reduced vision, which would suggest something other than surface bleeding is occurring.
If you have been prescribed drops for another condition such as glaucoma or dry eye, check with your doctor before your injection appointment about when to use them afterward. In most cases, your usual drops can continue on schedule, but your doctor may want you to space them out from any post-injection prescription drops to avoid washing the medication away or causing irritation.
Floaters that appear gradually after the injection, drift slowly, and start to fade over hours or days are almost always related to air bubbles or the medication dispersing through the vitreous gel, both of which are harmless. The pattern that warrants immediate attention is a sudden dramatic increase in the number of floaters, especially when combined with flashing lights or a shadow or curtain appearing at the edge of your vision. That combination can signal a retinal tear and should be evaluated the same day, regardless of when your next appointment is scheduled.
A single gentle rub is unlikely to cause serious harm, but it can increase redness at the injection site and potentially introduce bacteria from your fingertips. If you rub the eye accidentally, wash your hands, apply artificial tears to settle any irritation, and monitor the eye closely over the next several days for any signs of infection. Going forward, keeping artificial tears nearby reduces the urge to rub when the eye feels itchy or gritty.
Experiences vary from patient to patient. Some people report similar discomfort with each injection, some feel less over time as they become more comfortable with the process, and a smaller number notice increasing sensitivity. If your discomfort seems to be growing with each session, let your doctor know. Adjustments to the numbing technique or preparation can often improve your comfort without changing the effectiveness of your treatment.
Expert Retinal Care at Rhode Island Eye Institute
Our retina specialists at Rhode Island Eye Institute have extensive experience performing intravitreal injections and guiding patients through recovery with confidence and clarity. Serving patients across Rhode Island and beyond, our team is here to answer your questions, address your concerns, and make sure you feel supported at every stage of your treatment. We invite you to reach out to our practice and experience the difference that subspecialty expertise and compassionate care can make.