Getting an eye injection for the first time can feel nerve-wracking. Most people don’t know what to expect, and that uncertainty makes it worse. The needle near the eye, the clinical setting, the idea of sitting still through the whole thing. It’s a lot to think about before you’ve even been through it once. But the procedure itself is quick, well-established, and much more manageable than most people expect.
Millions of intravitreal injections are performed each year in the US, and for good reason. For many retinal conditions, they’re one of the most effective ways to slow disease progression and protect vision. This guide walks through how to prepare in the days before your appointment and what to do at home once it’s done.
What Are Eye Injections and Why Are They Used
Intravitreal injections involve placing medication directly into the vitreous cavity, the gel-filled space inside the eye. This gets the drug right where it needs to be, at a much higher concentration than oral medication or eye drops alone could deliver. For conditions affecting the back of the eye, that direct delivery matters a lot.
These injections are used to treat several retinal conditions that can cause serious vision loss if left untreated. The medication used depends entirely on your diagnosis and what your retina specialist decides is best.
Conditions commonly treated with intravitreal injections include:
- Age-related macular degeneration (AMD), both wet and dry forms
- Diabetic retinopathy and diabetic macular edema
- Retinal vein occlusion (RVO)
- Cystoid macular edema (CME)
- Uveitis and eye inflammation
- Endophthalmitis (serious eye infection)
How to Prepare for Your Eye Injection Appointment
Preparation starts before the day of the procedure. A few simple steps in the days leading up to your appointment can make things go more smoothly and reduce the risk of complications.
In the days before your injection:
- Wash your hair the night before. You will need to avoid getting water in your eye for at least 48 hours after the procedure, so clean hair beforehand helps.
- Wear clean, comfortable clothes on the day. Avoid eye makeup entirely, as it introduces bacteria near the injection site.
- Do not wear contact lenses to your appointment.
- Continue taking all existing medications unless your doctor tells you otherwise. This includes blood thinners. You generally do not need to stop them for this procedure.
- Arrange a ride home. Your vision may be temporarily blurry after the injection, and it is not safe to drive yourself.
On the day of your appointment:
- Eat a normal meal beforehand. There is no need to fast for this procedure.
- Bring a list of any medications and allergies if this is your first visit.
- Arrive a few minutes early. The clinic may need to apply numbing drops and dilating drops before the procedure, which takes some time to work.
What Happens During the Procedure
A lot of patients build this up in their heads as something painful, but most describe it as more uncomfortable than painful. Knowing the steps helps.
The area around your eye will be cleaned with a sterile antiseptic solution. Numbing drops are applied first, so the injection itself should not cause significant pain. A small device called a speculum may be used to gently hold the eye open. The injection is done in the white part of the eye and takes only a few seconds. After the medication is delivered, the doctor checks your eye pressure and confirms blood is flowing normally to the retina.
Normal Side Effects After an Eye Injection
Mild symptoms in the hours after the injection are normal and expected. Most patients feel notably better by the following morning.
Common symptoms you can expect:
- A gritty or sandy sensation in the eye, similar to having something stuck in it
- Mild redness or a visible red spot on the white of the eye (called a subconjunctival hemorrhage)
- Watery eyes or mild tearing
- Temporary blurry vision
- Floaters or small dark spots drifting across your vision
- Mild soreness or pressure
Most of these symptoms settle within 24 to 48 hours. The red spot, if it appears, may take a week or two to fully fade. It looks more alarming than it is.
Eye Injection Aftercare: What to Do at Home
There is not much required after an intravitreal injection, but there are important things to avoid and a few things that help with comfort. Following these instructions reduces your risk of infection and helps your eye settle properly.
For the first 24 to 48 hours:
- Do not rub your eye, even if it feels itchy or irritated
- Avoid swimming, hot tubs, and submerging your face in water
- Skip eye makeup and mascara
- Do not wear contact lenses
- Avoid vigorous exercise and heavy lifting
- Do not drive until your vision has returned to normal
Things that can help with comfort:
- Use preservative-free artificial tears every 15 to 20 minutes in the first couple of hours if your eye feels dry or irritated
- Apply a clean, cool damp cloth gently over the closed eye to ease discomfort
- If your doctor prescribed antibiotic eye drops, use them exactly as directed
If you were given an eye patch after the procedure, keep it on for the first two to three hours. Once removed, do not put it back on.
Eye Drop Instructions After Injection
Some patients are prescribed antibiotic or anti-inflammatory eye drops to use at home following the procedure. It is important to use these as directed and not skip doses.
| Drop Type | Purpose | Typical Duration |
|---|---|---|
| Antibiotic drops | Prevent infection | Usually 3 to 5 days post-injection |
| Anti-inflammatory drops | Reduce swelling and discomfort | As directed by your doctor |
| Preservative-free artificial tears | Relieve dryness and irritation | As needed for comfort |
Always wash your hands before putting in eye drops. Tilt your head back, pull the lower eyelid gently down, and place the drop inside. Do not let the tip of the bottle touch your eye or eyelid.
Warning Signs to Watch For
Most side effects are minor and temporary. But a small number of patients can develop complications after an injection, and it is important to know what to watch for. If you notice any of the following, contact your retina specialist right away. Do not wait for your next scheduled appointment.
Seek immediate care if you experience:
- Significant increase in pain or pain that gets worse over time
- Sudden or worsening vision loss
- Increasing redness that spreads across the eye
- New flashes of light in your vision
- A large or sudden increase in floaters
- Discharge coming from the eye
- Light sensitivity that is getting worse
These symptoms could indicate a serious complication such as an infection inside the eye (endophthalmitis) or a retinal detachment. Both are rare but require fast treatment. Patients who notice these warning signs should call the clinic directly rather than going to an emergency room or urgent care, since a retina specialist can assess and treat ocular emergencies much faster.
How Often Are Eye Injections Given
Retinal conditions like macular degeneration and diabetic retinopathy are ongoing conditions. They don’t have a single-dose cure. Eye injections typically need to be repeated over time to keep the disease under control and protect your vision.
Many patients start with injections every four to six weeks, especially in the first few months of treatment. Over time, the interval may be extended depending on how well your eye is responding. Your retina specialist will use imaging tools like optical coherence tomography (OCT) to monitor changes in retinal fluid and thickness at each visit.
Typical injection frequency by condition:
| Condition | Common Treatment Frequency |
|---|---|
| Wet AMD | Monthly initially, may extend to every 8 to 12 weeks |
| Diabetic macular edema | Monthly for 5 doses, then as needed |
| Retinal vein occlusion | Monthly initially, adjusted over time |
| Uveitis-related edema | Varies; depends on inflammation levels |
Ask Your Retina Specialist
Having a few questions ready before your appointment can help you leave with a clearer picture of your treatment. Here are some worth asking if you haven’t already.
- Which medication will I be receiving and why?
- How many injections will I likely need?
- What signs should I watch for between appointments?
- Are there any activities I should avoid long-term during my treatment?
- How will you know if the treatment is working?
The team at Retina and Vitreous Surgeons of Utah works with patients across multiple locations including Murray, Draper, Provo, and Payson to provide ongoing retinal care for these conditions.
Ready to Talk to a Retina Specialist in Utah
If you have been told you need eye injections and still have questions, talk to your retina doctor before the appointment. Knowing what to expect and having a clear aftercare plan takes a lot of the stress out of the whole process.
The team at Retina and Vitreous Surgeons of Utah serves patients across multiple locations in Utah. If you have concerns about your upcoming procedure or want to understand your treatment options, schedule a consultation with one of our retina specialists.