Ocriplasmin (microplasmin) vitreomacular adhesion drug, molecular model. Ocriplasmin is a protease enzyme that dissolves the proteins holding the eye vitreous and macula together and is thus used in the treatment of vitreomacular adhesion. Atoms are represented as spheres; This black and white ambient occlusion rendering gives a clear picture of the overall 3D structure of a microplasmin.