A water-soluble polymer may include a first water-soluble polymer of formula (3):

##STR00001##

wherein R.sup.8 is a linear or branched alkyl group with 6 to 20 carbon atoms, R.sup.9 is a hydrophilic group, R.sup.10 is a hydrogen atom or a methyl group, Y.sup.2 is a single bond, S, S(O), C(O)O, or O, and p2 is an average number of repetitions and is a number in a range of from 1 to 50.

A method for preparing an ophthalmic device for slowing, inhibiting or preventing myopia progression involves contacting an ophthalmic device having one or more reactive functional groups with one or more red-light blocking compounds having one or more reactive functional groups complementary to the one or more reactive functional groups of the ophthalmic device in a basic solution for a time period sufficient to covalently bond at least one reactive functional group of the ophthalmic device with at least one reactive functional group of the one or more red-light blocking compounds. The one or more red-light blocking compounds block greater than about 5% to about 25% of red-light transmission through the ophthalmic device at a wavelength of from about 550 nanometers (nm) to about 800 nm.

A method for preparing an ophthalmic device for slowing, inhibiting or preventing myopia progression involves contacting an ophthalmic device having one or more reactive functional groups with one or more red-light blocking compounds having one or more reactive functional groups complementary to the one or more reactive functional groups of the ophthalmic device in a basic solution for a time period sufficient to covalently bond at least one reactive functional group of the ophthalmic device with at least one reactive functional group of the one or more red-light blocking compounds. The one or more red-light blocking compounds block greater than about 5% to about 25% of red-light transmission through the ophthalmic device at a wavelength of from about 550 nanometers (nm) to about 800 nm.