Section 8. Permanent total disability benefits

In  the  case of total
  disability adjudged to be permanent the volunteer ambulance worker shall
  be paid four hundred  dollars  for  each  week  during  the  continuance
  thereof. Permanent total disability, within the meaning of this section,
  shall  exist  only  if  the  earning capacity of the volunteer ambulance
  worker has been lost permanently  and  totally  as  the  result  of  the
  injury.  The  loss  of  both  hands, or both arms, or both feet, or both
  legs, or both eyes, or  any  two  thereof,  shall,  in  the  absence  of
  conclusive proof to the contrary, constitute permanent total disability,
  but in all other cases permanent total disability shall be determined in
  accordance  with the facts. Notwithstanding any other provisions of this
  chapter, an injured volunteer ambulance worker disabled due to the  loss
  or  total loss of use of both eyes, or both hands, or both arms, or both
  feet, or both legs, or any two thereof shall not suffer  any  diminution
  of  such  weekly  benefit by engaging in business or employment provided
  his or her weekly earnings or  wages,  when  combined  with  his  weekly
  benefit  shall  not  be  in  excess  of six hundred dollars; and further
  provided that the application  of  this  section  shall  not  result  in
  reduction of benefits which an injured volunteer ambulance worker who is
  disabled  due  to  the  loss  or total loss of use of both eyes, or both
  hands, or both arms, or both feet, or both  legs,  or  any  two  thereof
  would  otherwise  be  entitled  to  under  any  other provisions of this
  article.