Melatonin drops directly into eye 19% IOP drop

Hi all- I recently found this bit of research claiming that melatonin eye drops lowered IOP by 10% on day one and 19% by day five. I can't paste the link because I'm using an Apple computer and it apparently has issues with my browser. Anyhow, you can find it at the NCBI website.

Now as far as I know nobody manufactures a melatonin eye drop, but this is something I would pay a manufacturing lab to do, if it works. Has anyone here experimented with or heard about this protocol?