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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 ...
The optic tract is a continuation of the optic nerve that relays information from the optic chiasm to the ipsilateral lateral geniculate nucleus (LGN), pretectal nuclei, and superior colliculus. [14] The optic tract represents the first stage in the visual pathway in which visual information is transferred in a homonymous nature. [ 15 ]
In 1941 David Reeves at the Children's Hospital Los Angeles described an association between underdevelopment of the optic nerve with an absent septum pellucidum. Fifteen years later French doctor Georges de Morsier reported his theory that the two abnormalities were connected and coined the term septo-optic dysplasia.
Amsler grid, Chart 1. There are 7 types of Amsler grid charts. All charts measure 10 cm × 10 cm (3.9 in × 3.9 in), which when viewed at a distance of 33 cm (13 in) from the eye can be used to measure defects in the central 20 degrees of the visual field. [3]
This is a partial list of human eye diseases and disorders. The World Health Organization (WHO) publishes a classification of known diseases and injuries, the International Statistical Classification of Diseases and Related Health Problems , or ICD-10.
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 .
The morning glory disc anomaly (MGDA) is a congenital deformity resulting from failure of the optic nerve to completely form in utero. [1] The term was coined in 1970 by Kindler, noting a resemblance of the malformed optic nerve to the morning glory flower. [2] The condition is usually unilateral. [3]
It presents with visual loss and signs of optic nerve dysfunction, such as loss of color vision, afferent pupil defect, and sometimes abnormalities of the optic disc. The clinical features of AON can be variable and present in several unilateral or bilateral forms: Acute anterior or retrobulbar optic neuritis sometimes associated with pain.