Chag....there is no product. Macular Health was a simple marketing arrangement where Fuse compensated Macular to include the tag "containing Fuse Technology" in a couple press releases and website blurbs in a feeble attempt to raise brand awareness.
Ask Fuse Science yourself. They will admit there is no MacuDrop product or licensing agreement.
Fuse will freely admit this fact in the 10-K though:
Our primary source of operating cash has been through private placements of our securities, principally convertible notes and warrants and the subsequent exercise of certain of those warrants.