By E. Ahmed
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The didactic thought of this publication, grounded on years of educating adventure, considers all facets of educating: - it permits effortless learning via transparent but finished assurance, - effortless memorizing via a well-structured presentation, and - effortless program via a transparent contrast among signs and prognosis, tabular presentation of significant indicators, and large indexing.
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Additional info for A Textbook of Opthalmology
This is about 2 cm long and is situated between the floor and posterior two-third of the lateral orbital wall. It transmits these structures: (a) the maxillary division of the V cranial nerve; (b) the infraorbital artery; (c) the zygomatic nerve; (d) the branches of the inferior ophthalmic vein to the pterygoid plexus; and (e) the branches of the sphenopalatine ganglion. Fossa at the anteromedial angle o f the floor. The inferior oblique muscle originates from this fossa. Posterior ciliary Posterior ethmoidal Supra-orbital Arteria retinae centralis Posterior ciliary Ophthalmic Muscular Lacrimal ^ •O p h th alm ic Nasociliary N.
2. Peripheral space is bound internally by the extrinsic muscles with their fascial expansions, peripherally by the periorbita, anteriorly by the septum orbitale, and it merges posteriorly with the retrobulbar space. 3. Retrobulbar (central) space, also called muscle cone, is a cone-shaped space limited anteriorly by the globe, posteriorly by the annulus tendinous communis of Zinn and laterally by the extraocular muscles. 4. Episcleral (Tenon) space lies round the eyeball between the sclera and Tenon’s capsule.
2. , System o f Ophthalmology, Vol. II: The Anatomy o f the Visual System, Duke-Elder, S. and Wybar, K. ), Kimpton, London, 1961. 3. Gray, H. ), Warwick, R. L. ), Longman, London, 1973. 2. ANATOMY OF THE EYELIDS13 The eyelids (Fig. 1) are movable folds to protect the eye from external injury, excessive light and undue exposure, to facilitate the distribution of tear and glandular secretions, and to help in the regulation of the amount of light reaching the retina. The palpebral fissure is an elliptical space, 30 mm long x 10 mm wide, between the upper and lower lid margins when the eye is open.