It is a procedure of injecting the required medicine into the GEL (vitreous) of the eye.
Why does an injection need to be given? can we not use drops instead? the unique structure of the eye with its multiple barriers prevent drops from reaching the retina. if we were to compare the structure of the eye to a coconut, the retina is the layer similar to the white inner portion of the coconut. no matter how many times one puts drops, they will not reach inside in required quantity.
There are several advantages of direct injections but the most important is to achieve required dose at the retina. It also increases the duration of effect of the medicine.
Common indications of intravitreal injections:
Wet age related macular degeneration (Wet ARMD) - CNVM, Polyps