After an Intravitreal Eye Injection: What’s Normal and What Are the Warning Signs?

After receiving an eye injection to treat a retinal condition, you may notice mild redness, temporary blurred vision, or small floating spots in your field of vision. These changes can be concerning, especially if this is your first injection.

So, what symptoms are normal after an intravitreal eye injection, and when should you seek immediate medical attention?

Mild irritation, a small red patch on the white of the eye, temporary blurriness, and a few floaters can occur after retinal injections. These symptoms usually improve within hours or days.

However, increasing eye pain, worsening vision, or progressively severe redness should never be ignored, as they may indicate complications requiring urgent assessment.

Understanding the recommended aftercare instructions can help reduce discomfort, recognize potential warning signs, and support a safe recovery while continuing your retinal treatment plan.

What Is an Intravitreal Eye Injection?

An intravitreal injection is a medical procedure in which a small amount of medication is delivered directly into the vitreous cavity, the gel-filled space inside the back of the eye.

This treatment is commonly used to manage retinal conditions that may threaten vision, including:

• Wet age-related macular degeneration (wet AMD).
• Diabetic macular edema (DME).
• Certain cases of diabetic retinopathy.
• Macular edema caused by retinal vein occlusion.

Among the most commonly used medications are anti-vascular endothelial growth factor (anti-VEGF) drugs, which help reduce fluid leakage and abnormal blood vessel activity.

Other medications, including intravitreal corticosteroids, may be recommended for selected patients depending on their retinal condition.

Injections are not the only treatment available for retinal diseases. Some patients may benefit from laser therapy or surgery. Understanding the differences between retinal injections and laser treatment can help explain how ophthalmologists select the most appropriate treatment for each condition.

What Happens During an Intravitreal Injection?

Intravitreal injections are generally performed in a controlled clinical environment using sterile techniques designed to reduce the risk of infection.

The procedure typically involves the following steps:

1. Numbing the eye: Local anesthetic eye drops are applied to minimize discomfort.
2. Cleaning the treatment area: The eye and surrounding tissues are disinfected using an appropriate antiseptic.
3. Keeping the eyelids open: A small instrument may be used to prevent blinking during the procedure.
4. Administering the medication: A fine needle delivers the prescribed medication into the vitreous cavity.
5. Post-injection assessment: The eye is evaluated as needed, and the patient receives aftercare instructions.

The injection itself usually takes only a few seconds. Patients may feel mild pressure or brief discomfort.

Most people can leave the clinic shortly afterward without requiring hospitalization. However, following the medical team’s instructions is essential.

What Symptoms Are Normal After an Eye Injection?

Some temporary symptoms are common following an intravitreal injection and do not necessarily indicate a complication.

Mild Redness or a Blood Spot on the White of the Eye

A small, bright red patch may appear on the white of the eye after an injection.

This is often caused by a minor subconjunctival hemorrhage, which occurs when a small blood vessel near the injection site breaks.

Although the appearance can be alarming, it generally does not affect vision and usually resolves gradually within several days to two weeks.

However, redness that becomes progressively worse, particularly when accompanied by pain or reduced vision, requires urgent medical evaluation.

Mild Burning, Stinging, or a Gritty Sensation

Some patients experience mild stinging, irritation, or the sensation of having sand in the eye.

This discomfort may result from the antiseptic solution used during the procedure or temporary irritation of the eye’s surface.

Symptoms often improve within one or two days.

Lubricating eye drops recommended by the ophthalmologist may help relieve discomfort.

Temporary Blurred Vision

Vision may appear slightly blurred after an intravitreal injection.

This can result from eye drops used during the procedure or temporary changes inside the eye.

Mild blurriness should gradually improve rather than worsen.

If vision becomes significantly reduced or continues to deteriorate, contact your ophthalmologist immediately.

Small Bubbles or Floaters

Some patients notice small black spots, bubbles, or floating shapes moving across their vision after an injection.

These may be related to tiny air bubbles or temporary changes within the vitreous cavity and often disappear within a few days.

However, a sudden increase in floaters, especially when accompanied by flashes of light or a dark shadow across the visual field, should not be considered a normal post-injection symptom.

How Long Do Redness and Blurred Vision Last After a Retinal Injection?

The duration of symptoms varies depending on the individual eye, the medication administered, and the patient’s response.

These timeframes are approximate and do not apply to every patient.

The most important consideration is whether symptoms are improving or worsening. Gradual improvement is generally reassuring, while increasing pain, redness, or vision loss requires urgent evaluation.

What Are the Warning Signs After an Eye Injection?

Although intravitreal injections are widely performed, rare but serious complications can occur.

These include endophthalmitis, elevated intraocular pressure, and retinal complications.

Seek immediate ophthalmic care if you experience:

• Severe eye pain or pain that progressively worsens.
• Sudden or significant deterioration in vision.
• Increasing redness accompanied by pain.
• Severe sensitivity to light.
• Noticeable eyelid swelling with worsening eye symptoms.
• A sudden, substantial increase in floaters.
• New flashes of light.
• A dark curtain or shadow covering part of your vision.

Do not wait for your scheduled follow-up appointment if any of these warning signs appear.

Can an Eye Infection Develop After an Intravitreal Injection?

Yes. Endophthalmitis is a rare but serious complication involving severe inflammation or infection inside the eye.

Symptoms may include increasing pain, significant redness, and worsening vision, often developing during the first few days after the procedure.

Suspected endophthalmitis requires immediate medical assessment because prompt diagnosis and treatment are essential for protecting vision.

Can a Retinal Detachment Occur After an Eye Injection?

Retinal detachment is another rare potential complication of intravitreal injections.

Warning signs include new flashes of light, a sudden increase in floaters, or a curtain-like shadow moving across the visual field.

These symptoms can occur for other reasons, but they always warrant urgent retinal examination.

What Should You Do During the First 24 Hours After an Eye Injection?

Appropriate aftercare helps protect the eye’s surface and minimize irritation following the procedure.

Avoid Rubbing or Pressing on the Eye

Do not rub the treated eye, even if it feels itchy or uncomfortable.

Rubbing may increase surface irritation and transfer contaminants from your hands to the eye area.

Keep Your Hands Clean

Wash your hands thoroughly before touching the area around your eye or applying prescribed drops.

Avoid allowing the tip of an eye drop bottle to touch your eye or eyelashes.

Keep Water and Soap Away from the Eye

Avoid getting water directly into the treated eye for the period recommended by your ophthalmologist.

Take care when showering, washing your face, or washing your hair.

Aftercare recommendations vary between clinics, so the instructions provided by your treating medical team should always take priority.

Avoid Eye Makeup and Contact Lenses Temporarily

Your ophthalmologist may recommend avoiding eye makeup and contact lenses for one or several days after the injection.

The appropriate time to resume these activities depends on the condition of the eye’s surface and the instructions provided after treatment.

Do Not Drive Until Your Vision Is Clear

Vision may be temporarily affected by pupil-dilating drops or the injection itself.

Do not drive until your vision has returned to a level that allows safe driving, and follow any additional restrictions provided by your ophthalmologist.

Can You Use Your Phone or Watch Television After an Eye Injection?

Most patients can return to ordinary visual activities, including using a smartphone, watching television, and reading, once their vision and comfort allow.

These activities do not generally interfere with the medication’s effectiveness.

However, if your eyes feel irritated or tired, take regular breaks and avoid prolonged visual concentration.

Stop the activity and seek medical advice if you develop increasing pain or sudden vision changes.

Can You Sleep on the Side of the Injected Eye?

There is no universal sleeping position required for every patient after an intravitreal injection.

However, avoiding direct pressure on the treated eye is advisable.

Follow any specific instructions provided by your ophthalmologist, particularly if the injection was performed alongside another procedure or if your eye condition requires additional precautions.

Can You Shower or Exercise After a Retinal Injection?

Many patients can gradually return to their normal daily activities, although some precautions may be recommended during the initial recovery period.

Showering: Avoid getting water or soap into the treated eye for the period specified by your medical team.

Exercise: Strenuous physical activity may need to be avoided for 24 hours or longer, depending on your ophthalmologist’s instructions.

Swimming: Avoid swimming pools and diving during the initial recovery period until your doctor confirms that these activities are safe.

Work: Many patients can return to non-strenuous work relatively quickly, provided their vision is adequate and they are not experiencing symptoms requiring rest.

Recovery instructions may differ between treatment centers, so no single timeframe is appropriate for every patient.

Do You Need Eye Drops After an Intravitreal Injection?

Your ophthalmologist may recommend lubricating eye drops to relieve temporary dryness, irritation, or a gritty sensation.

However, topical antibiotics are not routinely required after every anti-VEGF injection unless a specific medical indication exists.

If you already use prescription eye drops for glaucoma or another eye condition, do not stop them without consulting your ophthalmologist.

Avoid using leftover corticosteroid or antibiotic eye drops from previous treatments unless they have been specifically prescribed for your current condition.

Will Your Vision Improve Immediately After a Retinal Injection?

Not necessarily.

The time required for visual improvement depends on the underlying retinal disease, how long it has been present, the extent of retinal damage, and the medication used.

Some patients begin noticing improvement within a few weeks, while others require several injections before a meaningful response becomes apparent.

In certain conditions, the primary goal of treatment is to prevent further vision deterioration rather than restore vision that has already been lost.

For example, retinal injections are commonly used to manage diabetic macular edema, a condition caused by fluid leakage into the central retina. The guide to diabetic retinopathy treatment at Batal Eye Center explains how retinal injections, laser treatment, and ongoing monitoring may be incorporated into patient care.

Why Do Some Patients Need Repeated Eye Injections?

Many retinal diseases are chronic and require treatment over time.

The effects of injected medications last for a limited period, and disease activity may return as their effectiveness decreases.

Your ophthalmologist determines the interval between injections according to your eye’s response rather than following an identical schedule for every patient.

Follow-up examinations may include visual acuity testing and OCT imaging to evaluate retinal fluid and structural changes.

Treatment needs also vary depending on the underlying condition.

Some cases of diabetic retinopathy require active intervention, while others can be monitored without immediate injections. Understanding when diabetic retinopathy requires treatment rather than monitoring can help explain how ophthalmologists make these decisions.

When Should You Have a Follow-Up Appointment After an Eye Injection?

Your retina specialist determines the appropriate follow-up schedule based on your diagnosis, the medication administered, and previous examination results.

Appointments may be more frequent during the initial treatment phase, with intervals adjusted as the condition becomes stable.

Follow-up visits help assess visual acuity, monitor retinal fluid using OCT, and determine whether additional injections or changes to the treatment plan are necessary.

However, a scheduled follow-up appointment is not a reason to delay urgent medical attention if warning signs develop beforehand.

Retinal Treatment and Follow-Up with Dr. Waddah Chalabi

Retinal conditions treated with intravitreal injections require specialized follow-up to evaluate treatment response and determine whether additional injections or alternative interventions are necessary.

Dr. Waddah Chalabi is a Consultant Vitreoretinal Surgeon and Medical Director at Batal Eye Center, with more than 30 years of experience in diagnosing and managing complex retinal diseases.

He holds a Fellowship of the Royal College of Surgeons (FRCS), and his clinical expertise includes diabetic retinopathy management and advanced retinal surgery.

His professional profile also describes the use of OCT imaging and retinal examination techniques to evaluate retinal disorders, along with experience in conditions requiring intravitreal injections, laser treatment, or surgery.

Specialist follow-up helps interpret visual changes after injections, monitor treatment effectiveness, and identify cases requiring further intervention.

Need Follow-Up Care After a Retinal Injection? Book an Appointment at Batal Eye Center

Retinal care does not end when an injection is completed.

Ongoing management involves monitoring the eye’s response, assessing visual function, and determining whether additional treatment sessions are needed.

Batal Eye Center provides diagnostic and follow-up services for retinal conditions, including diabetic retinopathy, macular diseases, and disorders that may require intravitreal injections or laser treatment.

A retina specialist can assess changes following treatment and distinguish expected temporary symptoms from complications requiring medical intervention.

If you experience severe pain, sudden vision deterioration, or increasing redness after an injection, seek urgent medical assessment rather than waiting for a routine appointment.

Frequently Asked Questions After an Intravitreal Eye Injection

Is Eye Redness Normal After an Injection?

Mild redness or a small blood spot on the white of the eye can occur after an injection and usually resolves gradually.

However, worsening redness accompanied by pain or reduced vision requires urgent evaluation.

How Long Does Eye Pain Last After a Retinal Injection?

Mild irritation or stinging may occur during the first few hours and sometimes lasts one or two days.

Severe pain or pain that worsens instead of improving is not normal and requires urgent medical attention.

Are Black Spots or Floaters Normal After an Injection?

A few small floaters or bubbles may appear temporarily and disappear within several days.

A sudden increase in floaters, especially with flashes of light or a dark curtain across the vision, requires urgent examination.

Can I Wash My Face After an Eye Injection?

You can generally clean your face carefully while avoiding water or soap entering the treated eye for the period recommended by your ophthalmologist.

Can I Use My Phone After a Retinal Injection?

Yes, once your vision and comfort allow.

Take breaks if you experience irritation or eye strain.

Do I Need Antibiotics After an Eye Injection?

Antibiotic eye drops are not routinely prescribed after every retinal injection.

Your ophthalmologist will determine whether they are necessary for your particular condition.

Can I Drive After an Intravitreal Injection?

Do not drive while your vision is blurred or affected by dilating eye drops.

Follow your medical team’s advice about when it is safe to resume driving.

How Soon Will I Notice Results After a Retinal Injection?

The response varies according to the retinal disease and treatment.

Some patients notice changes within weeks, while others require repeated injections before the treatment outcome can be adequately assessed.

Can an Infection Occur After an Eye Injection?

Yes, although it is rare.

Increasing pain, worsening redness, and declining vision may indicate a serious infection requiring immediate medical assessment.

Should I Contact My Doctor If My Vision Gets Worse After an Injection?

Yes. If you experience sudden or significant deterioration in vision, contact your ophthalmologist immediately or seek emergency eye care.