A novel benzophenone type polymerizable dye containing a urethane bond and
an ophthalmic lens containing the said polymerizable dye are disclosed.
The benzophenone type polymerizable dye is shown by the following general
formula (1) ##STR00001## (wherein R.sup.1 and R.sup.2 are respectively
and independently a hydrogen atom, a hydroxyl group, a carboxylic group,
a C1 to C8 alkyl group, a C1 to C8 alkoxy group, a sulfonic acid group or
a benzyloxy group, and m and n are respectively and independently an
integer of 0 to 18. R.sup.3 is any of a polymerizable functional group of
a vinyl group, an acryloyl group or a methacryloyl group).