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The optic disc appears abnormally small, because not all the optic nerve axons have developed properly. [1] It is often associated with endocrinopathies (hormone deficiencies), developmental delay, and brain malformations. [2] The optic nerve, which is responsible for transmitting visual signals from the retina to the brain, has approximately 1 ...
Chart 1 is the basic version, which is the most familiar and widely used chart among all the charts. In this chart the grid consists of 0.5 cm squares (each for 1° visual field), which totally measures 10 cm X 10 cm size. Most commonly grid is in white color with black background. [3]
Developmental delays are more common in children with bilateral optic nerve hypoplasia than those with unilateral optic nerve hypoplasia. [6] Bilateral optic nerve hypoplasia is also associated with a more severe disease course. [7] There may be nystagmus (involuntary eye movements, often side-to-side). [6] In cases of bilateral optic nerve ...
Poor alignment of the eyes, eye being irregularly shaped such that focusing is difficult, one eye being more nearsighted or farsighted, clouding of the lens [1] Diagnostic method: Vision testing [1] Differential diagnosis: Brainstem disorders, optic nerve disorder, eye diseases [3] Treatment: Glasses, eyepatch [1] [2] [4] Frequency ~2% of ...
The optic nerve can be damaged when exposed to direct or indirect injury. Direct optic nerve injuries are caused by trauma to the head or orbit that crosses normal tissue planes and disrupts the anatomy and function of the optic nerve; e.g., a bullet or forceps that physically injures the optic nerve.
One and a half syndrome; Other names: On-and-a-half syndrome: Diagram of normal eye movement compared to left one-and-a-half syndrome (i.e. left lateral gaze palsy, with left Internuclear ophthalmoplegia (inability to adduct))
Design by MNT; Photography by Community Eye Health, CC BY-NC 2.0 & NurPhoto/Getty Images ... This condition, caused by a sudden loss of blood flow to the optic nerve, can result in severe and ...
Pages in category "Disorders of optic nerve and visual pathways" The following 15 pages are in this category, out of 15 total. This list may not reflect recent changes .