Usage History of 'optometry'

The following chart shows how frequently 'optometry' appeared in printed materials over time. For example, the word 'optometry' occurred 4 times in books in 1792 and 4,283 times in 2008. From 1792 to 2008, the word 'optometry' was used a total of 178,542 times in books scanned by Google. See Reference: Google Ngram project.

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