Download e-book for iPad: A Synopsis of Ophthalmology by J. L. C. Martin-Doyle and Martin H. Kemp (Auth.)

By J. L. C. Martin-Doyle and Martin H. Kemp (Auth.)

ISBN-10: 0723604118

ISBN-13: 9780723604112

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These three differ in degree only, varying from a faint clouding effect imperceptible to the naked eye, to a dense thick white mass completely preventing any rays of light from entering the eye. If the lesion is epithelial only, complete regeneration takes place and a perfect visual result can be expected. If, however, the lesion extends to Bowman's membrane or deeper, a greater or lesser degree of permanent opacity results. Broadly speaking, the deeper the destruction of tissue the denser and more permanent is the resulting opacity.

5. achoma inclusion Conjunctivitis) agents belong to the Chlamydia group of virus which cause trachoma, 'inclusion' conjunctivitis and inclusion blenorrhea—a purulent conjunctivitis which occurs in the newborn between the fourth and tenth day. It can also occur as a follicular conjunctivitis in adults. TRIC agents also cause chronic inflammation in the cervix and urethra which can, in turn, infect the eyes. TRIC agent infections are sensitive to sulphonamides. IV. D E G E N E R A T I O N S There are eight principal degenerative conditions: (1) Band opacity; (2) Arcus senilis; (3) Arcus juvenilis; (4) Marginal atrophy; (5) Pannus degenerativus; (6) Fanconi's syndrome; (7) Saltzmann's nodular degeneration; (8) Wilson's disease.

PATHOLOGY: A corneal ulcer is saucer shaped, with its edge somewhat swollen and oedematous. It may vary in depth from just the epithelial layers to almost the whole corneal thickness. Necrosis of the base takes place and the surrounding area is packed with leucocytes. When healing takes place vessels grow in from the limbus and the neighbouring epithelium, covering the floor of the ulcerated area. Although at first slightly depressed, this area is lifted eventually to the normal level by multiplying spindle cells.

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

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