Intravitreal Injections
Intravitreal Injection
Intravitreal injection is a specialized medical procedure used to deliver medications directly into the vitreous—the jelly-like substance in the back of the eye. This remains the most effective method for treating various retinal diseases, as it bypasses the blood-ocular barrier that often prevents oral or intravenous medications from reaching the retina in sufficient concentrations.
When You Should Consider Intravitreal Injection
"Wet" Age-Related Macular Degeneration (AMD): To stop the growth of abnormal, leaky blood vessels that cause rapid vision loss.
Diabetic Macular Edema (DME): If you need to reduce retinal swelling caused by fluid leakage from blood vessels damaged by diabetes.
Retinal Vein Occlusion (RVO): To manage fluid backup following a "stroke" in the eye’s vascular system.
Uveitis: Delivering potent anti-inflammatory steroids directly to the back of the eye to treat chronic inflammation.
Endophthalmitis: In emergency cases to deliver immediate antibiotic or antifungal treatment for severe internal infections.
How Is Performed
Numbing: The eye is thoroughly anesthetized using specialized drops or a gel to ensure patient comfort.
Sterilization: The eye and eyelids are cleaned with a povidone-iodine solution to prevent bacterial infection.
Stabilization: A small device (speculum) is used to keep the eyelids open and prevent blinking during the procedure.
Injection: A very fine needle is used to deliver medication through the Pars Plana—the "white part" of the eye—in a process that lasts only a few seconds.
Post-Check: The surgeon checks the eye for immediate pressure changes and may provide artificial tears for comfort.
Duration: The entire clinical process typically takes less than 10 to 15 minutes.
Methods of Injection
Anti-VEGF Therapy: The use of agents that block proteins promoting leaky vessel growth; modern agents often allow for extended treatment intervals of 3–4 months.
Corticosteroid Delivery: Direct injection of steroids to manage chronic internal eye inflammation and swelling.
Antibiotic/Antifungal Administration: Targeted delivery of antimicrobial agents for severe internal infections.
OCT-Guided Treatment: Using high-resolution imaging to determine the precise frequency of injections needed for each patient.
Pre-Procedure Preparation
Baseline Consultation: A detailed exam to identify leaking blood vessels or the specific areas of retinal swelling.
Medical History: Discussing current medications and any history of iodine allergies or recent eye infections.
Visual Expectations: Preparing for the temporary appearance of "floaters" or "bubbles" in your vision immediately following the procedure.
Transportation: Arranging for a ride home, as your vision may be temporarily blurry from dilating drops.
Treatment Planning: Reviewing the long-term schedule, including whether you will receive long-acting medications.
Tests Before Intravitreal Injection
Optical Coherence Tomography (OCT): A high-resolution scan used to measure retinal thickness and track fluid accumulation over time.
Fluorescein Angiography: A diagnostic test used to map out the exact location of leaking blood vessels in the retina.
Visual Acuity Test: Establishing a clear baseline of vision quality to monitor the effectiveness of the medication.
Intraocular Pressure (IOP) Check: Ensuring the internal pressure of the eye is within a safe range before the injection.
Life After Intravitreal Injection
Vision Settling: Expect "floaters" or "bubbles" in your vision to disappear within 24–48 hours as the medication distributes.
Hygiene: Avoid rubbing your eyes or exposing them to swimming pools, hot tubs, or dusty environments for 2 to 3 days.
Injection Site: Monitor for a subconjunctival hemorrhage (a harmless red spot at the needle entry point), which typically resolves within a week.
Safety Monitoring: Watch for rare signs of complication, such as increasing pain, severe redness, or a sudden "curtain" falling over your vision.
Follow-up: Adhering to regular appointments for OCT imaging is essential to ensure the treatment is successfully stabilizing your vision.
Why Specialized Treatment Is Highly Effective
Systemic Safety: Minimizes side effects compared to oral or intravenous medications because the drug stays localized within the eye.
Bypasses Barriers: Delivers high concentrations of medication directly to the retina that other delivery methods cannot reach.
Rapid Results: Offers a quick, outpatient experience with minimal downtime and a fast return to daily activities.
Vision Preservation: Significantly improves or stabilizes vision in patients with conditions that were previously considered untreatable.
Minimal Discomfort: The fine-needle technique is generally described as a sensation of pressure rather than sharp pain.
Intravitreal Injections Cost in India
The cost of Intravitreal Injections in India is generally affordable compared with many other countries, making India a popular destination for international patients seeking quality medical care. The treatment cost depends on factors such as the hospital, doctor's experience, treatment approach, medical condition, hospital stay, diagnostic tests, medicines, and any additional procedures required. For international patients, the starting cost of Intravitreal Injections in India is approximately 50 USD, although the final price may vary based on individual treatment requirements. Patients are advised to obtain a personalized treatment estimate after medical evaluation.
