Little attention has been paid to Renaissance medical texts. However, some recent studies show an increasing interest on different aspects of this type of texts, especially on vocabulary (McConchie, 1997), which experienced a considerable increase during this period.
    Richard Banister (1570-1626) was an important ophthalmologist of his time. His work A treatise of one hundred and thirteene diseases of the eyes (1622), now preserved in a special collection at the University of Washington, is a short compilation of texts concerning different matters related tothe preservation of the sight. The study of the structure and of some discursive features of the text may provide interesting grounds for comparison with texts of the same and/or a different period.