id	keyword
hindsight-20093	optometry
hindsight-20093	journal
hindsight-20093	hindsight
hindsight-20093	american
hindsight-20093	vision
hindsight-20093	history
hindsight-20093	number
hindsight-20093	birnbaum
hindsight-20093	volume
hindsight-20093	case
hindsight-20093	page
hindsight-20093	war
hindsight-20093	ruffin
hindsight-20093	association
hindsight-20093	society
hindsight-20093	bass