The Variable Efficacy of Intravitreal Bevacizumab and Triamcinolone Acetonide for Cystoid Macular Edema Due to Radiation Retinopathy

Abstract

IVB and IVTA have variable effects on the reduction of macular edema due to radiation retinopathy. IVB appears to have an initial effect in reducing macular edema in some patients but after multiple injections there can be resistance to its effects. IVTA was effective in three of five patients with complete resolution of macular edema. The combination of IVB and IVTA completely resolved macular edema in one patient resistant to IVB or IVTA alone. The reason for this may be due to their different therapeutic mechanisms of action and consideration should therefore be given to their use in combination.