id	keyword
hindsight-3567	optometry
hindsight-3567	issue
hindsight-3567	time
hindsight-3567	university
hindsight-3567	optics
hindsight-3567	years
hindsight-3567	school
hindsight-3567	eye
hindsight-3567	mirror
hindsight-3567	early
hindsight-3567	new
hindsight-3567	vision
hindsight-3567	professor
hindsight-3567	vol
hindsight-3567	south
hindsight-3567	concave
hindsight-3567	page
hindsight-3567	board
hindsight-3567	africa
hindsight-3567	books
hindsight-3567	course