Ophthalmic advices:Intravitreal injections

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The intravitreal injections are a treatment by which a drug is administered to the eye by injection. Locally administered a drug to level the back of the eye (which has a gelatinous liquid content, vitreous) at high doses that could not be achieved by other routes of administration.

The most common drugs are antiangiogenic (agents against vascular endothelial growth factor) and corticosteroids. The antiangiogenic reduce the growth of abnormal blood vessels and malfuncionantes stopping the growth of neovascular membranes on macular degeneration or liquid leaks that cause macular edema on diabetic retinopathy or vascular occlusions. Corticosteroids are used to reduce the inflammation that is associated with macular edema. Other medications may be used in intravitreal injections, such as antibiotics indicated in infections of the eye (endophthalmitis).


The indications are to treat choroidal neovascularization in macular degeneration and macular edema (accumulation of fluid in the macula) in diabetic retinopathy associated with age, vein occlusion and other ailments.


The decision to apply Intravitreal injections requires a complete eye examination with an examination under pupil dilation in order to check the retina and in many cases support further studies like angiography with fluorescein of the retina and/or optical coherence tomography (OCT).


The intravitreal injection is done in most cases with topical anesthesia, ie placing anesthetic drops into the eye. It can be performed in the operating room or in a prepared but always under strict hygienic conditions, with disinfection of eyelid and eye consultation. It is recommended that treatment with antibiotic drops in the eye for a few days to avoid the risk of infection. Another possible risk is the onset of a cataract, which can occur for the same drug. The procedure is quick, lasting about 5 minutes. The result of the operation and the patient's recovery rely heavily and degree of disease being treated. In favorable cases recovery can be quickly and satisfactorily. The patient may reinstate your daily life easily.

This procedure can be successful even multiple doses are typically required by the pathology. Some cases may be resistant to treatment and have to evaluate other treatment options to provide better result.