Usage History of 'scleral'

The following chart shows how frequently 'scleral' appeared in printed materials over time. For example, the word 'scleral' occurred 2 times in books in 1799 and 6,385 times in 2008. From 1799 to 2008, the word 'scleral' was used a total of 392,163 times in books scanned by Google. See Reference: Google Ngram project.

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