1905.] 



On the Production of Intraocular Fluid. 



298 



aorta a large rise of blood pressure was produced in this eye, since all the 

 blood had to pass through the one carotid artery in order to get back to the 

 heart. On the other hand, an almost complete anaemia could be produced in 

 the eye by obstruction of the one remaining carotid. We give below the 

 results of one such experiment. 



Cat, anaesthetised with Ether and the A.C.E. Mixture. A small dose of 

 Curare was injected after anaesthesia was complete. The extract of 

 2 grammes of dried leech heads was injected. 



Dog. Weight, 7 kilos. Anaesthetised with the A.C.E. mixture and morphia 

 The extract of 2 grammes of dried leech heads was injected. Both 

 subclavians and vertebrals were tied. Temporary ligature round aorta. 

 Cannula in left eye. B.P. observed in right carotid. 



It will be seen that in every case a rise of intraocular pressure caused an 

 increase in the amount of fluid secreted. It is impossible, however, to deduce 

 directly from these experiments that the intraocular fluid is a transudation. 

 The opening of tfie eye-ball and the consequent diminution of the intraocular 

 pressure to nothing have a serious effect on all the intraocular structures. 



