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 and are colour-coded: hydrogen (white), carbon (grey), oxygen (red), sulfur (yellow) and nitrogen (blue).