The annular tendon is commonly named 'annulus of Zinn', from the German 
anatomist and botanist Johann Gottfried Zinn (1727-1759) who described this 
structure in his Descriptio anatomica oculi humani (Anatomical Description of 
the Human Eye, 1755). This structure, however, had been previously discovered 
not by Zinn, but by Antonio Maria Valsalva (1666-1723) some decades before the 
publication of Zinn, in his Dissertatio anatomica prima and Dissertatio 
anatomica altera (First and Second Anatomical Dissertations), inside Valsalva's 
Opera omnia published in 1740. We advance that this structure could be re-named 
such as 'annulus of Valsalva-Zinn' because Valsalva, even making a mistake in 
its functional interpretation, first described this anatomical structure. 
Likewise, Valsalva, with his discovery, advanced a revolutionary idea for that 
time on the usefulness of anatomy for clinic and pathology.