302 
Topical  Applications. 
f  Am.  Jour.  Pharm. 
July,  1917- 
erally  used  in  aqueous  solutions,  ranging  from  5  per  cent,  to  10  per 
cent. 
Aqueous  Solutions  for  ophthalmic  use  should  be  carefully  fil- 
tered before  being  dispensed. 
Aqua  Camphor ce:  it  is  important  that  all  alcohol  be  evaporated 
in  the  preparation  of  this  solution  for  ophthalmic  use. 
Argyrol  should  always  be  freshly  prepared  with  distilled  water 
and  dispensed  in  a  dark  bottle. 
Aristol,  when  prepared  for  eye  work,  should  always  be  dissolved 
in  sterile  olive  oil. 
Atropine ,  when  used  in  its  alkaloidal  state,  should  first  be  dis- 
solved in  olive  oil  and  then  incorporated  in  ointment  form  or  further 
diluted  with  the  oil  for  dispensing. 
Boroglycerin  and  its  compounds  have  been  previously  described. 
Calomel,  for  ophthalmic  work,  should  be  an  amorphous  powder. 
It  should  never  be  dispensed  if  the  patient  is  known  to  be  taking 
iodides. 
Chlorine  Water.  This  solution,  for  ophthalmic  work,  should 
consist  only  of  the  gas  in  water  from  0.4  per  cent,  to  0.5  per  cent, 
solution.  As  a  compress  a  drachm  of  this  solution  to  eight  ounces 
of  hot  water  is  about  the  proper  percentage. 
Cocaine,  when  used  in  the  alkaloidal  form  for  local  anaesthesia, 
should  be  dissolved  in  freshly  sterilized  olive  oil.  It  should  never 
be  dispensed  in  combination  with  zinc  or  sodium  salts. 
Collodion,  when  used  on  wounds  in  the  ocular  region,  should 
contain  a  small  percentage  of  iodoform. 
Copper  Sulphate,  when  dispensed  for  eye  work,  should  contain  a 
small  percentage  of  glycerin.  It  should  never  be  used  after  applying 
an  alkaline  or  silver  nitrate  solution. 
Copper  Citrate  is  used  as  an  astringent  in  combination  with  glyc- 
erite  of  boroglycerin. 
Ethyl-morphine  hydrochloride  forms  a  saturated  solution  at  10 
per  cent.  It  is  generally  prescribed  in  from  3  per  cent,  to  10  per 
cent,  solutions  and  frequently  in  combination  with  atropine  or 
eserine  and  should  be  dispensed  in  dark  glass. 
Fluorescein  is  used  in  solution  for  staining  ulcers.  The  solution 
acts  best  when  of  2  per  cent,  strength  rendered  alkaline  with  the 
addition  of  3.5  per  cent,  of  sodium  bicarbonate. 
Gelatin  is  used  in  the  manufacture  of  ophthalmic  discs  and  for 
making  formalin  preserving  jelly  previously  described. 
