Usage History of 'retinopathy'

The following chart shows how frequently 'retinopathy' appeared in printed materials over time. For example, the word 'retinopathy' occurred 2 times in books in 1909 and 29,205 times in 2008. From 1909 to 2008, the word 'retinopathy' was used a total of 681,405 times in books scanned by Google. See Reference: Google Ngram project.

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