An actinically crosslinkable prepolymer, being obtained by: (a) copolymerizing an actinically polymerizable composition to obtain an intermediary copolymer with first functional groups, wherein the actinically polymerizable composition comprises at least one vinylic monomer including a hydrolyzable silicone-containing group, at least one hydrophilic vinylic monomer, at least one siloxane-containing monomer having one ethylenically unsaturated group, at least one siloxane-containing macromer having one ethylenically unsaturated group, at least one siloxane-containing monomer having two or more ethylenically unsaturated groups, at least one siloxane-containing macromer having two or more ethylenically unsaturated groups, or a combination of two or more thereof, and optionally a chain transfer agent, provided that at least one of components - further comprises at least one first functional group; and (b) reacting an organic compound with the copolymerization product to form the crosslinkable prepolymer having actinically crosslinkable groups, wherein the organic compound comprises an actinically crosslinkable group and a second functional group, wherein the second functional group of the organic compound reacts with one of the first functional groups of the intermediary copolymer, wherein the at least one vinylic monomer including a hydrolyzable silicone-containing group is a vinylic monomer of formula or in which 1 R is H or -CH 3, -L- is -O- or 2 R is trimethylsilyl group (-Si(CH 3) 3) or a C 4 - C 25 alkyl which is substituted by at least one trimethylsilyloxy, trimethylsilylamino group or trimethylsilyl-C 1 -C 7 alkylamino group, 3 R is H or C 1 -C 8 alkyl group, in which 1 R is H or -CH 3, -L- is -O- or 3 R is H or C 1 -C 8 alkyl group, 4 R is C 1 -C 12 unsubstituted alkylene (divalent radical) or substituted alkylene in which one or more hydrogens are substituted by C 1 -C 3 alkoxy groups, hydroxy groups, amino groups, thiol groups, and/or carboxyl groups, 5 R is C 1 -C 7 alkylene group. (a) copolymerizing an actinically polymerizable composition to obtain an intermediary copolymer with first functional groups, wherein the actinically polymerizable composition comprises at least one vinylic monomer including a hydrolyzable silicone-containing group, at least one hydrophilic vinylic monomer, at least one siloxane-containing monomer having one ethylenically unsaturated group, at least one siloxane-containing macromer having one ethylenically unsaturated group, at least one siloxane-containing monomer having two or more ethylenically unsaturated groups, at least one siloxane-containing macromer having two or more ethylenically unsaturated groups, or a combination of two or more thereof, and optionally a chain transfer agent, provided that at least one of components - further comprises at least one first functional group; and at least one vinylic monomer including a hydrolyzable silicone-containing group, at least one hydrophilic vinylic monomer, at least one siloxane-containing monomer having one ethylenically unsaturated group, at least one siloxane-containing macromer having one ethylenically unsaturated group, at least one siloxane-containing monomer having two or more ethylenically unsaturated groups, at least one siloxane-containing macromer having two or more ethylenically unsaturated groups, or a combination of two or more thereof, and optionally a chain transfer agent, (b) reacting an organic compound with the copolymerization product to form the crosslinkable prepolymer having actinically crosslinkable groups, wherein the organic compound comprises an actinically crosslinkable group and a second functional group, wherein the second functional group of the organic compound reacts with one of the first functional groups of the intermediary copolymer,