The first Portuguese book on ophthalmology. Santa Ana was the first Portuguese physician to specialize in ophthalmology. "He acknowledges (pp. vii-viii) that the section of the Elementos on anatomy and physiology is a translation of Deshais-Gendron’s Traité des maladies des yeux, 1770, but states that he made numerous corrections based on his own experience: “Aqui forão necessarias hum maior número de emendas, tanto em Anatomia, como em Fysica.” Likewise the section on pathology and therapy is a translation from Plenck’s Doctrina de morbis oculorum, 1777, but has numerous corrections based on Santa Anna’s experience." (Richard Ramer). Digital facsimile from the Hathi Trust at this link.