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By J. L. C. Martin-Doyle (Auth.)

ISBN-10: 1483283054

ISBN-13: 9781483283050

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A . S . , or other antituberculous antibiotic is essential. SYPHILIS OF T H E CONJUNCTIVA R a r e . I t occurs in t w o forms : ( 1 ) P r i m a r y chancre ; and ( 2 ) Gummatous ulceration. B o t h these forms resemble tuberculosis, but e x a m i n a t i o n o f t h e scrapings for spirochetes and the Wassermann test will settle t h e diagnosis. DEGENERATIVE CHANGES P i n g u e c u l a is the name g i v e n t o small triangular nodules which are found in middle-aged people, especially in those patients w h o live an open-air and exposed life.

T h e cause is unknown, but its effects on vision are dire in the e x t r e m e , especially since 25 per cent of cases are bilateral. T R E A T M E N T . — I n addition t o the usual t r e a t m e n t for corneal ulcers, the following measures m a y be taken : — a. R e m o v a l o f the overhanging edge ; this is essential. b. Cauterization w i t h the electric cautery. c. Covering w i t h a conjunctival flap or a tarsorrhaphy. d. R a d i u m t r e a t m e n t (beta r a y s ) in severe cases. 6.

O w i n g t o this rather inadequate bloodsupply, the cornea possesses a unique respiratory mechanism whereby o x y g e n passes through the cornea in one direction only from the air t o the anterior chamber, and the carbon dioxide similarly travels in the reverse direction only. T h e epithelium and endothelium, b y some D I S E A S E S OF T H E CORNEA 27 m e t h o d unknown, effect this interchange o f gases, which is k n o w n as transpiration. P a t h o l o g y . , conjunctival phlyctens near the limbus can cause a localized keratitis ; and similarly deep corneal injuries and infections can spread b y the endothelium t o the uveal tract.

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A Synopsis of Ophthalmology by J. L. C. Martin-Doyle (Auth.)

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