A composition includes at least one fatty acid glycerol ester for use during or after a vitrectomy procedure, the composition being bioresorbable, being injectable in the vitreous cavity, having a density below 1, more preferably between 0.90 and 1, or a density above 1, more preferably between 1 and 1.5； having a surface tension of less than 50 dynes/cm more preferably ranging from 20 and 30 dynes/cm, being not susceptible to emulsify into droplets when injected； method for treating a retinal disorder involving the use of the composition.
