Unlike prior art composite lenses, the ophthalmic lens can be produced conveniently using {HEAD ~ an insert molding process}, which is a modified cast molding or {TAIL ~ double side molding process} 
is
Unlike prior art composite lenses , the ophthalmic lens can be produced conveniently using { HEAD ~ an insert molding process } , which is a modified cast molding or { TAIL ~ double side molding process }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL