The book Text-Book of Ophthalmology was written by author Ernst Fuchs Here you can read free online of Text-Book of Ophthalmology book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Text-Book of Ophthalmology a good or bad book?
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287 is the part that suffers most from injuries due to foreign bodies as from injuries in general. What is most frequently observed are small particles of iron in the cornea, particularly among mechanics of a certain sort, hke locksmiths, blacksmiths, iron founders, etc. These particles do not look like metallic iron, but vary from dark brown to black; for the particles of iron, which, for example, fly oflf when iron is being ham- mered, are heated by the force of the blow so that they are thro...wn out as sparks. Thus they become oxidized into ferroso-ferric oxide (so- called iron scale), and under this form are found in the cornea. If the fragment of iron remains sticking in the cornea, it becomes surrounded very soon by a brown ring, because it impregnates the portions of the cornea in its immediate vicinity with iron (ferric hydrate) and so turns them brown. Fragments of coal are also frequently found in the cor- nea — for instance, in firemen or in people after a railroad journey — and fragments of stone in stonecutters, stonebreakers, etc.
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