By Roger L. Coakes and Patrick J. Holmes Sellors (Auth.)
This version has been revised and up to date and is in color and in a brand new structure. The e-book nonetheless permits the coed or practicing medical professional to deal with daily ophthalmic difficulties, in addition to spotting these medical events which require professional consciousness. It offers a concise account of recent ophthalmology. uncomplicated anatomy and body structure are coated in addition to the illnesses of the attention, defined symptom through symptom instead of via the standard systematic technique. the attention in systemic ailment, ophthalmic investigations and remedy, and customary misconceptions also are mentioned. All illustrations look at once contrary the suitable textual content
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Extra resources for An Outline of Ophthalmology
7. Nasolacrimal duct obstruction in infants. Incomplete canalization of the lower end of the duct is a common cause of the watering sticky eye in children under 6 months of age. Management 1,2,3 and 4 can be diagnosed by careful inspection and the cause removed or corrected surgically. 5 and 6 are diagnosed by probing and syringing of the lacrimal passages. The site of an obstruction can be further delineated by contrast radiology (dacryocystography). If symptoms merit treatment canalicular obstructions can be excised and nasolacrimal duct stenosis bypassed by dacryocystorhinostomy (DCR) (see Chapter 35).
Chronic glaucoma is prevalent in all communities and affects the elderly especially. Early detection of the disease and its control pose great difficulties in widely scattered communities with poor medical facilities. Bilateral cataract. The acute red eye The acute red eye is due to inflammation of the anterior part of the eye which causes a variable degree of pain and, depending on the tissue involved, discharge, photophobia, loss of vision and pupillary abnormality. By contrast, inflammation of the choroid and retina causes painless loss of vision in an eye that appears externally normal.
It may cause blurring of the vision and soreness of the skin at the inner and outer canthi. Ocular irritation and emotional upset cause lacrimation with spillage of excess tears. Defects in the lacrimal drainage system cause epiphora and may lead to infection. Upper punctum Upper canalicu lus ι ^ 4 . ^ Is- Comm on canaliculus ^ ^__-Lacrimal sac 2 3 4 5 Λ, —Nasolacrimal duct Causes A. Lacrimation 1. Corneal foreign body, abrasion or inflammation. 2. Entropion or ingrowing eyelashes. 62 10 63 Diseases of the eye B.
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