The Theory of Vision was translated into Latin, and published in 1685 by desire of Sir Isaac Newton, who wrote a commendatory preface to it, acknowledging the benefit he had derived from Briggs's anatomical skill and knowledge.
Several points in Briggs's account of the eye are noteworthy, one being his recognition of the retina as an expansion in which the fibres of the optic nerve are spread out ; another, his laying emphasis upon the hypothesis of vibrations as an explanation of the phenomena of nervous action.
In 1689, according to a curious memorial on one sheet preserved in the British Museum, Dr. Briggs was at great expense in vindicating the title of the crown to St. Thomas's Hospital, but was himself dismissed from his post, owing, as he states, to the machinations of a rival physician.
From the same sheet we learn that, although he attended the royal household with great zeal for five years, he could get no pay ; and notwithstanding that in 1698 William III promised that he should be considered, this was of no avail.
In consequence of these circumstances, apparently early in Anne's reign, he begs for consideration in regard to the hospital appointment.