AU - Beyer, Ernst TI - Zeiss screen-type visual balance tester PT - ARTI DP - 1963 Jan 1 TA - Indian Journal of Ophthalmology PG - 19-22 VI - 11 IP - 1 4099- https://journals.lww.com/ijo/pages/default.aspx/article.asp?issn=0301-4738;year=1963;volume=11;issue=1;spage=19;epage=22;aulast=Beyer;type=0 4100- https://journals.lww.com/ijo/pages/default.aspx/article.asp?issn=0301-4738;year=1963;volume=11;issue=1;spage=19;epage=22;aulast=Beyer AB -