Ozurdex is a steroid implant that is injected into the vitreous jelly in the back of the eye, slowly dissolving and releasing the medication over time, lasting up to 6 months. It is most commonly used to treat macular oedema caused by Central or Branch Retinal Vein Occlusion and works to reduce inflammation in the retina. Similarly, Iluvien is also a steroid implant that is injected into the vitreous jelly of the eye. The difference is that this type of treatment is better suited to those with Diabetic Macular Oedema at a stage where the condition has not responded to any other forms of therapy. Iluvien lasts significantly longer than Ozurdex, for up to 3 years.