By J. L. C. Martin–Doyle (Auth.)

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T h e ulcer a n d its i m m e d i a t e a r e a should b e d r i e d w i t h b l o t t i n g p a p e r a n d a s h a r p m a t c h o r o r a n g e stick d i p p e d i n t o p u r e liquid carbolic. T h e whole of t h e b a s e of t h e ulcer s h o u l d b e c a u t e r i z e d w i t h t h i s . I t m a y b e necessary t o use several a p p l i c a t i o n s of t h e stick. G r e a t c a r e should b e t a k e n t h a t t h e r e is n o excess of liquid carbolic o n t h e stick or t h i s m a y r u n o v e r t h e h e a l t h y c o r n e a .

I m p l a n t a t i o n c y s t s c a n occur following injuries, a n d v e r y rarely cysticerci or h y d a t i d s m a y b e seen. T U M O U R S OF CONJUNCTIVA INNOCENT TUMOURS 1. D e r m o i d s . — T h e s e usually occur a t t h e j u n c t i o n of t h e c o r n e a a n d sclera a n d b o t h t h e s e s t r u c t u r e s m a y b e involved. A d e r m o i d is a n ovoid, flesh- or yellow-coloured t u m o u r with a c o n v e x surface. R e m o v a l should b e u n d e r t a k e n , for, a l t h o u g h i n n o c e n t , it is v e r y u n s i g h t l y .

P a n n u s D e g e n e r a t i v u s . — T h i s occurs in d e g e n e r a t e blind eyes a n d develops b e t w e e n B o w m a n ' s m e m b r a n e a n d t h e e p i t h e l i u m . I t is a g r a n u l a t i o n tissue which s p r e a d s i n w a r d s from t h e l i m b u s , a n d a t a l a t e r stage fibrous a n d hyaline 42 DISEASES OF THE CORNEA Pannus Degenerativus, continued. changes occur a n d t h e epithelium becomes t h i c k e n e d . B o w m a n ' s m e m b r a n e is completely d e s t r o y e d .

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