Human trabecular meshwork (HTM) cells express surface markers consistent with human mesenchymal stem cells (hMSCs). Donor cells extracted from 3 meshworks (HTM 50a, 50b, and 63a; n=3) all expressed positive markers of hMSCs (CD73, CD90, CD105, CD146) and did not express negative markers (CD31, CD34, CD45). This was consistent with the positive control of an adipose-derived hMSC (hMSC; n=1).