Adult bone marrow stem cells can help cure certain genetic eyes diseases Adult bone marrow stem cells can help cure particular genetic eye diseases, according to University of Cincinnati researchers. Scientists have completed a report using mice which demonstrated that bone marrow stem cells can switch roles and make keratocan, an all natural protein involved in the development of the cornea, the transparent, outer level of the eyeball. This ability of marrow cells to ‘differentiate’ into keratocan-producing cells might provide a means for treating irregular corneal cell growth in people sildenafilini.com .