On the nature and symptoms of cataract : and on the cure of that disease, in its early stages, by a mode of practice calculated to prevent the occurrence of blindness, and to render unnecessary the operations of couching and extraction. Illustrated by cases / by John Stevenson.

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On the nature and symptoms of cataract : and on the cure of that disease, in its early stages, by a mode of practice calculated to prevent the occurrence of blindness, and to render unnecessary the operations of couching and extraction. Illustrated by cases / by John Stevenson. Public Domain Mark. Source: Wellcome Collection.