[ON THE DEVELOPMENT AND TESTING OF SOME SCREENED VISION TEST SIGNS AND THEIR USE FOR THE DEMONSTRATION OF AGGRAVATIONS].
D004864:Equipment and Supplies; D006801:Humans; D010808:Physical Examination; D014787:Vision Tests
EQUIPMENT AND SUPPLIES; VISION TESTS
UBER DIE ENTWICKLUNG UND ERPROBUNG EINIGER GERASTERTER SEHPRUEFZEICHEN UND IHRE BRAUCHBARKEIT FUER DEN NACHWEIS VON AGGRAVATIONEN.