Low water-absorptive ocular lens material, low water-absorptive ocular lens shaped product made thereof, low water-absorptive ocular lens made thereof and process for its production

A process for producing a low water-absorptive ocular lens, which comprises polymerizing polymerizable components comprising a methoxysilane compound (A) of the formula (I):

• X--Z--Si(OCH.sub.3).sub.n (R.sup.1).sub.3-n (I)
• wherein X is a (meth)acryloyloxy group, a vinyl group, a group of the formula H.sub.2 C.dbd.CH ##STR14## or an allyl group, Z is a direct bond or a C.sub.1-3 alkylene group, R.sup.1 is a C.sub.1-6 alkyl group, and n is an integer of from 1 to 3, and a hydrophobic silicon-containing monomer (B) selected from the group consisting of an organopolysiloxane-containing alkyl(meth)acrylate, an alkylvinyl silane, an organopolysiloxane-containing styrene of the formula (II):
• ##STR15## wherein p is an integer from 1 to 15, q is 0 or 1, and r is an integer from 1 to 15, and a mixture thereof which is copolymerizable with the methoxysilane compound (A) and which undergoes no crosslinking reaction, to obtain a substantially non-crosslinked low water-absorptive ocular lens material, shaping the low water-absorptive ocular lens material into a shape of desired ocular lens, to obtain a low water-absorptive ocular lens shaped product, and contacting the low water-absorptive ocular lens shaped product with water to crosslink the low water-absorptive ocular lens shaped product.