No clinical trials = no clinical evidence
The manufacturers of Regener-Eyes and StimulEyes have never conducted or completed a clinical trial for these products.
To verify this fact for yourself:
Go to clinicaltrials.gov
Type the product name (no dashes) into the second search box, which allows you to search on drug names.
Our results as of July 31, 2022 (see clickable images below)
Searching on “regenereyes” yields the following single result:
“Clinical Efficacy of Amniotic Membrane Extract Eye Drops in Dry Eye Treatment” (Sponsor: UCLA)
Note that this description is not consistent with the manufacturer’s description of Regener-Eyes
Note that the trial was posted in December 2021 and is “not yet recruiting” as of July 2022.
Searching on “stimuleyes” yields no results.
