State  of  the  pupil  and  condition  of  vision. — ^The  pupil
is  at  first  slightly  dilated,  and  in  the  progress  of  the
disease  this  dilatation  of  the  pupil  increases,  and  the
German  ophthalmologists  lay  great  stress  upon  the  state
of  the  pupil  among  the  diagnostic  sjrmptoms  of  glaucoma,
and  they  say  that  it  is  elongated  in  the  lateral  direction,
rimilar  to  the  pupil  of  graminivorous  animals.  But  this
change  in  the  figure  of  the  pupil  is  certainly  not  always
present  and  does  not  appear  to  be  at  all  necessary  to  the
fidl  development  of  a  well-marked  case  of  glaucoma.
