After damaging the inner optic nerve head tissue with enzymes, adding saline solution slightly increased stiffness by about 13% compared to the damaged state.

In the inner part of the eye's optic nerve head, collagen-breaking enzymes caused a 57% drop in stiffness compared to normal.

After damaging the inner optic nerve head tissue with enzymes, the special peptide restored stiffness by nearly 50% compared to the damaged state.

After damaging the eye tissue with enzymes, adding a saline solution (vehicle) made the stiffness drop even more by about 26% compared to the damaged state.