140 FUNGUS H/ExMATODES. 



Symptoms. — '' The disease arising within the eyeball presents 

 three stages : — In the first stage the exterior form of the eye is un- 

 changed. The disease is perceived through the cornea and pupil ; 

 the latter being dilated and immoveable, and behind it, the vitreous 

 humour having a shining yellow appearance. By and by, this 

 bright reflection attracts more attention, and is evidently arising 

 from the presence of a solid body at the bottom of the eye, which 

 slowly advances towards the pupil. As it advances the tumour 

 presses the vitreous humour and crystalline lens before it; the 

 former is absorbed — the latter presses, in its turn, the iris con- 

 vexly forward. By and by the lens becomes opaque, and is 

 generally absorbed. Still advancing, the iris is pressed against 

 the cornea. 



" 2c? Stage. — The cornea rapidly expands to, perhaps, double its 

 natural diameter. The eye grows knotted at one or more places. 

 The white tumour, covered by thin conjunctiva only, now feels 

 soft, and might be mistaken for a collection of pus, and so opened. 

 If the lens had not previously been absorbed, it is now dis- 

 charged. 



'' 3cZ Stage. — The tumour, protruding through the ruptured cornea 

 and sclerotica, forms with great rapidity, so that it is no longer 

 capable of being covered by the eyelids. It assumes the appear- 

 ance of a dark red fungus, irregular on its surface, soft, readily 

 torn, and bleeding profusely on the slightest irritation. Clots of 

 extravasated blood form in the interior of the medullary mass. 

 Extravasations, indeed, of this kind are apt to supplant almost the 

 whole of the medullary matter; so that the name, fujigus hcBma- 

 todes, becomes more appropriate. Portions of the tumour die, 

 blacken, and slough off from time to time, but the general bulk of 

 the fungus is not at all reduced ; on the contrary, it increases so as 

 to distend the eyelids to an enormous degree, and even to dilate 

 or destroy the orbit; while the portion which projects from that 

 cavity, and overhangs the cheek, sometimes exceeds the size of a 

 man's fist. 



"The lymphatic glands of the cheek and neck become enlarged, 

 sometimes to a very great extent. In some instances the opposite 

 eye is protruded from its socket. 



