118 THE PRACTICE OF VETERINARY MEDICINE. 



Glaucoma. — This condition is oftenest seen in old 

 animals. The hyaloid membrane changes its condition, 

 becomes of a bkiish colour, and vision is very seriously 

 interfered with, or completely destroyed. A few cases 

 have come under observation where the animals when young 

 had suffered from osteo-porosis, and glaucoma had occurred 

 as a result. It may exist in connection with cataract. 



Treatment. — The condition, being incurable, does not 

 admit of treatment. 



Fungus Hsemotodes. — This growth is also known by the 

 names 'medullary sarcoma,' 'bleeding cancer,' etc. It 

 may be defined to be- a dark-coloured, highly vascular 

 tumour of a cancerous nature. This formidable and 

 malignant disease is fortunately very rare. It is occasionally 

 associated with tuberculosis. The tumour, being removed, 

 has a strong tendency to reappear, and, in fact, does reappear 

 in nearly every case. 



SijmiJtoms. — Shght irritation of the eye is noticed ; there 

 is a flow of tears ; the cornea enlarges and bursts, as it 

 were, and a small fungoid tumour makes its appearance, 

 passes through the opening, grows rapidly, until it hangs 

 down over the cheek, collecting dirt, etc. 



Treatment. — Use the knife freely, remove 'the fungus, 

 and if necessary the eyeball as well, and touch the parts 

 with caustic potash, argenti nitras, or the actual cautery. 

 Restrain the haemorrhage, which is usually excessive, by 

 styptics, as tr. ferri, plumb, acet, or the actual cautery. 

 The bones of the orbital cavity may be affected. To have 

 the slightest chance of success, the operation must be per- 

 formed as early as possible. All diseased structures in the 

 neighbourhood are also to be removed. 



Staphyloma. — This disease consists of a protrusion of 

 the cornea, or the formation of an elevation somewhat 

 resembling a grape — hence the name. The disease is not 



