Vitreal injection is a procedure used to deliver medication directly into the vitreous humor (the gel-like substance inside the eye) to treat conditions such as diabetic retinopathy, retinal vein occlusion, or macular edema. The procedure involves injecting the medication through a fine needle into the vitreous cavity, where it can directly target the affected retinal tissue.

Common medications used in vitreal injection include anti-VEGF drugs, steroids, or antibiotics, depending on the underlying condition. This treatment helps reduce swelling, inflammation, and abnormal blood vessel growth in the retina.

Vitreal injections are typically performed on an outpatient basis and can significantly improve vision and prevent further damage in patients with retinal diseases.