Ocular inserts comprising a covalently linked steroid dimer

A method of treating a posterior ocular disorder or condition of an eye of a subject in need thereof, the method comprising intravitreally administering to the eye of the subject in need thereof an intravitreal implant comprising a steroidal compound represented by the structure:

• the implant comprising the steroidal compound in an amount of at least 95% (w/w), thereby treating the posterior ocular disorder or condition of the eye of the subject in need thereof, the posterior ocular disorder or condition of the eye being macular edema or uveitis.