id	keyword
hindsight-3579	lenses
hindsight-3579	eyeglass
hindsight-3579	o.d
hindsight-3579	history
hindsight-3579	years
hindsight-3579	issue
hindsight-3579	manufacturing
hindsight-3579	optometry
hindsight-3579	vol
hindsight-3579	area
hindsight-3579	osaka
hindsight-3579	war
hindsight-3579	industry
hindsight-3579	new
hindsight-3579	plastic
hindsight-3579	american
hindsight-3579	journal
hindsight-3579	records
hindsight-3579	period
hindsight-3579	article
hindsight-3579	society
hindsight-3579	development