Abstract
A symposium hosted by the European Society of Ophthalmology discussed challenges in the management of diabetic macular oedema (DMO). Clinical evidence suggests that the longer the duration of DMO, the worse the response to anti-vascular endothelial growth factor (anti-VEGF) agents and better the response to corticosteroids. This is explained by the fact that inflammation is involved in the perpetuation of retinal changes in diabetes. At early disease stages, VEGF is primarily responsible for retinal changes; however, chronic microglia activation resulting from retinal damage leads to cytokine production by retinal cells and subsequent inflammatory cascades. Steroids are most effective at this stage. Clinical trial data have demonstrated the efficacy of the Iluvien® fluocinolone acetonide (FA) intravitreal implant, which retains its efficacy in disease of long duration. However, it is important to remember two things: that diabetes is a multifactorial disease with potential complications and to monitor for safety effects. In terms of the latter, anti-VEGF agents are associated with potential systemic effects, whereas steroids raise intraocular pressure and are associated with increased incidence of cataract.
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