Ischemic Optic Neuropathy
| Autor: | Reinaldo A. Garcia, John B. Kerrison, Veronica Oria, Monica Rodriguez Fontal |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
medicine.medical_specialty
genetic structures business.industry Vision Disorders Ischemic optic neuropathy medicine.disease eye diseases Surgery Visual field Diagnosis Differential Optic neuropathy Neurology Ophthalmology Edema Decreased Visual Acuity medicine Optic nerve Etiology Humans Optic Neuropathy Ischemic Neurology (clinical) Arteritis medicine.symptom business |
| Zdroj: | Seminars in Neurology. 27:221-232 |
| ISSN: | 1098-9021 0271-8235 |
| DOI: | 10.1055/s-2007-979686 |
| Popis: | Ischemic optic neuropathies (IONs) are the most frequent acute optic neuropathy in patients older than 50 years. They are classified according to the location of the ischemic damage into anterior ION and posterior ION. Ischemic optic neuropathies may also be categorized based on the presence or absence of temporal arteritis as an underlying etiology. Anterior ION presents with sudden, painless visual loss developing over hours to days. Examination findings usually include decreased visual acuity, a visual field defect, color vision loss, a relative afferent pupillary defect, and a swollen optic nerve head. Posterior ION occurs in arteritic, nonarteritic, and surgical settings. It is characterized by acute vision loss without initial disc edema but with subsequent optic disc atrophy. |
| Databáze: | OpenAIRE |
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