Sixty-five paper sheets of Priestly Smith perimeter chart for the right eye, made by Curry & Paxton Ltd, early 20th century.Thirty-eight sheets are marked with ‘A’, twenty-seven sheets are marked with ‘B’. Sixty-five paper sheets of Priestly Smith perimeter chart for the right eye 1901-1930
Fifty-seven paper sheets of Priestly Smith perimeter chart for the left eye, made by Curry & Paxton Ltd, early 20th century. Thirty-one sheets are marked with ‘A’, twenty-six sheets are marked with ‘B’. Fifty-seven paper sheets of Priestly Smith perimeter chart for the left eye 1901-1930