The invention relates to a new therapeutic approach for treatment and/or prevention of a disease of the posterior segment of the eye, in particular for retinal and optic nerve pathologies. Dobesilic acid and/or a pharmaceutically acceptable salt,or an ester of any of the acid or the salt,are proposed for use topically administered onto eye surface. There are also disclosed new compositions comprising dobesilic acid and/or a pharmaceutically acceptable salt,or an ester of any of the acid or the salt, adapted for performing the treatment and/or prevention of diseases of the posterior segment of the eye.