 have shown that the mechanical strength can be increased for SCLs by incorporating a nanodiamond (ND) infrastructure into contact lens matrix.Additionally, many researchers have investigated the implications of loading vitamin E into the contact lens matrix of SCLs.Although vitamin E incorporation into the matrix has been shown to slow the release of drugs into the eye and onto cornea (a desirable trait of a ophthalmic delivery system), it has also been shown to decrease oxygen permeability.