THE TREATMENT OP EYE DISEASES 527 



Silver nitrate can be used, grain ^ to i to one drachm. This 

 can be painted on the lids in chronic cases, or stronger, grains 

 I to- 5 to- one drachm. Wash well later with saline solution. 



Keep solution in a stoppered bottle and in the dark. 



Protargol is commonly used, 10 to 25 per cent. 



Copper sulphate, grains }^ to one drachm. It is usually used as 

 a pencil in trachoma. 



In blepharitis, conjunctival interstitial phlyctenular keratitis 

 use yellow oxide of mercury. 



For persistent ulcerative blepharitis use : — 



^ Ichthyol 10 grains 



Ung. zinc. ox. 2 drachms 



When vasoconstrictors are required for the absorption of 

 exudates use : — 



^ Adrenalin chloride (i : rooo) i drachm 

 Aquae destill. ad i ounce 



^ Acid boric 10 grains 



Suprarenal (i : I'ooo) ... i drachm 



Aquas camph. ... ... h ounce 



Aquae destill i ,, 



Both these are contra-indicated in corneal ulcer. 



In iritis, keratitis, glaucoma and corneal ulcers use : — 



Dionin, a derivative of morphine, 2 to 4 per cent, solution, 

 two drops every two minutes for ten drops. It relieves 

 pain, induces local anaesthesia, is a vasodilator and a 

 lymphagogue ; it is a counter-irritant and will assist in 

 dilating the pupil and breaking down the posterior 

 synechia caused by the iritis which so often ends in 

 blindness. This drug loses its effect in a few days, so 

 that it cannot be used over long periods. 



(4) Disinfectants (so-called). 



These are for restricted use only and required to be followed 

 by excess of bland solutions to remove any disinfectant left 

 behind. 

 In cases of purulent conjunctivitis and corneal ulcers use : — 

 Mercuric chloride i : 5,000. i : 5,000 has been used upon 



the conjunctiva after trachoma. 

 Chlorine water diluted with 10 to 20 parts of water, freshly 



made. 

 Carbolic acid, 3 per cent, and pure carbolic to infected 

 corneal ulcers. Formalin, i : 1,000 to i :2,ooo. i :50o to 

 in'fected ulcers. 

 Tincture of iodine for infected ulcers. 



