id	keyword
hindsight-3540	vol
hindsight-3540	optometry
hindsight-3540	american
hindsight-3540	issue
hindsight-3540	years
hindsight-3540	library
hindsight-3540	association
hindsight-3540	history
hindsight-3540	article
hindsight-3540	entitled
hindsight-3540	eye
hindsight-3540	journal