Pseudo-duplication of the optic nerve head
نویسندگان
چکیده
منابع مشابه
Optic nerve head drusen.
Optic disc drusen are congenital and developmental anomalies of the optic nerve head seen commonly in clinical practice, often as an incidental ophthalmologic finding during routine exams. Optic disc drusen are a form of calcific degeneration in some of the axons of the optic nerve. Visual acuity is often not affected but the visual fields of these patients can be abnormal and deteriorate over ...
متن کاملMicrovasculature of the rat optic nerve head.
PURPOSE To describe the arterial blood supply, capillary bed, and venous drainage of the rat optic nerve head. METHODS Ocular microvascular castings from 6 Wistar rats were prepared by injection of epoxy resin through the common carotid arteries. After polymerization, tissues were digested with 6 M KOH, and the castings washed, dried, and coated for scanning electron microscopy. RESULTS Imm...
متن کاملOptic Nerve Head Drusen Mimicking Optic Nerve Tumor
1. Castiblanco CP, Adelman RA. Sympathetic ophthalmia. Graefes Arch Clin Exp Ophthalmol 2009;247:289-302. 2. Cha DM, Woo SJ, Ahn J, Park KH. A case of sympathetic ophthalmia presenting with extraocular symptoms and conjunctival pigmentation after repeated 23-gauge vitrectomy. Ocul Immunol Inflamm 2010;18:265-7. 3. Haruta M, Mukuno H, Nishijima K, et al. Sympathetic ophthalmia after 23-gauge tra...
متن کاملMicrostructure of the Optic Nerve Head
INTRODUCTION The ocular disease glaucoma is the second most common source of blindness worldwide. Gradual, irreversible vision loss is a result of nerve damage in the optic nerve head; a collagen structure that provides support for the optic nerve and blood vessels that enter the posterior of the eye [1]. Glaucoma is clinically known to be correlated with high levels of intraocular pressure fro...
متن کاملOphthalmoscopic evaluation of the optic nerve head.
Optic nerve diseases, such as the glaucomas, lead to changes in the intrapapillary and parapapillary region of the optic nerve head. These changes can be described by the following variables: size and shape of the optic disk; size, shape, and pallor of the neuroretinal rim; size of the optic cup in relation to the area of the disk; configuration and depth of the optic cup; ratios of cup-to-disk...
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ژورنال
عنوان ژورنال: African Vision and Eye Health
سال: 2009
ISSN: 2410-1516,2413-3183
DOI: 10.4102/aveh.v68i2.155