Optic disc pathology

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August undefined, 2024

WebOptic disc edema refers to the ophthalmoscopic swelling of the optic disc with a concurrent increase in fluid within or surrounding the axons. While unilateral disc edema is more common, bilateral disc edema can occur. WebMar 15, 2015 · Pale Disc Points to Trouble. An asymptomatic patient presented with optic disc pallor and asymmetric cupping. Neuroimaging found something more. A 43-year-old white female presented for a routine examination. Her only complaint was near vision difficulty related to presbyopia. She had a history of breast cancer with mastectomy, for …

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WebOptic Disc Edema The optic disc is elevated and its surface is covered by cotton wool spots (damaged axons) and flame hemorrhages (damaged vessels). Four I's: increased intracranial pressure (papilledema), … WebIntroduction. Optic disc pits (ODPs) are congenital anomalies of the optic nerve head, first described by Wiethe 1 in 1882 as black cavities on the optic nerve head observed in one eye of a 62-year-old woman. The prevalence of ODP is estimated to be one in every 11,000 patients. 2,3 In about 70% of cases, the ODPs are located on the temporal side of the disc … flag with shovel

Optic disc: Anatomy, function and location Kenhub

WebMar 30, 2024 · Patel HR, Margo CE. Pathology of Ischemic Optic Neuropathy. Arch Pathol Lab Med. 2024 Jan;141(1):162-166. doi: 10.5858/arpa.2016-0027-RS. ... Ischemic optic neuropathy (ION) describes a state of hypoxic injury of the optic nerve. ... ION is divided into anterior and posterior forms defined by the presence or absence of optic disc swelling ... WebApr 7, 2024 · Optic atrophy refers to the death of the retinal ganglion cell axons that comprise the optic nerve with the resulting picture of a pale optic nerve on fundoscopy. … Web2 days ago · Megalopapilla (MP) is a rare congenital anomaly that is characterized by an enlarged nerve head and abnormal disc shape. MP can mimic glaucomatous changes of the optic nerve and can occur in one or both eyes.1–3 MP is a benign condition with unknown etiology, but it has been reported in individuals with congenital glaucoma, basal ... canon rebel t6i battery and charger

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Optic Nerve Sheath Meningioma - EyeWiki

WebJul 15, 2024 · Several tests can aid in the evaluation: OCT of the peripapillary RNFL can be particularly helpful, as the en face images can reveal subtle peripapillary... Fundus autofluorescence may help to highlight optic disc drusen, which appear hyper … WebOct 5, 2024 · Optic Nerve Sheath Meningiomas (ONSM) are uncommon, benign neoplasms originating from the meningothelial cells of the meninges surrounding the optic nerve. The tumor may arise from either the intraorbital or intracanalicular portions of the optic nerve where there is a meningeal sheath. flag with ship on itWebA computer-aided diagnostic tool for myopia detection is of paramount importance since the pathology results in irreversible damage to the eye. Unfortunately, designing of such systems is hindered by several issues such as (i) difficulties in segmentation of optic disc (OD) due to smooth variability between the OD and other retinal features ... flag with shield

"WebMay 17, 2024 · Examination of the optic nerve head for potential glaucoma or other pathology is one of the very fundamental skills that all optometrists require, and so … " - Optic disc pathology

Optic disc pathology

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WebMay 6, 2024 · The various devices measure RNFL thickness in slightly different ways. In the Spectralis OCT, it’s measured directly with a 3.46-mm diameter circular scan centered on the optic disc. In the case of the Cirrus OCT, the measurement of RNFL is generated from a 6 mm 3 cube scan centered on the optic disc. The RTVue device scans the optic nerve ... WebAug 8, 2024 · Optic atrophy is a pathological term referring to optic nerve shrinkage caused by the degeneration of retinal ganglion cell (RGC) axons. The term “optic atrophy” is regarded as a misnomer since atrophy implies disuse. Therefore, a better term for optic atrophy would be “optic neuropathy.”

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WebMar 28, 2016 · Optic Disc. Leer en Español: Disco Óptico. Mar. 28, 2016. The structure around the optic nerve where it enters the back of the eye. Read an overview of general eye anatomy to learn how the parts of the eye work … WebMay 24, 2024 · Optic pathway gliomas (OPG) are low-grade neoplasms arising from the pre-cortical optic pathways. OPG can involve the optic nerve, optic chiasm, optic tracts, optic radiations, or the hypothalamus. …

WebThe optic disc or optic nerve head is the point of exit for ganglion cell axons leaving the eye. Because there are no rods or cones overlying the optic disc, it corresponds to a small … WebMar 21, 2024 · Optic disc drusen (ODD), or hyaline bodies, are a relatively common entity usually found incidentally on CT or on follow-up of abnormal fundoscopy. Epidemiology Optic disc drusen are identified radiographically in up to 0.3-3.7% of the population and are frequently bilateral 1,4,5.

WebJul 22, 2024 · The optic nerve head (also known as the optic disc) is approximately 1.5 mm wide and is also associated with a physiological cup that corresponds to a central depression in the optic nerve head. The … WebDiabetic papillopathy, another potential ocular complication from diabetes, is a self-limiting, sometimes bilateral disease that may affect both type 1 and type 2 diabetics. It is characterized by optic disc swelling caused by vascular leakage and axonal edema in and around the optic nerve head.

WebMay 14, 2024 · The etiology of optic nerve drusen is considered secondary to the slowing of axoplasmic flow from blood supply compromise of the optic disc. This stasis in the axoplasmic flow then leads to the …

WebJoyce Liao, MD, PhD, professor of ophthalmology and neurology, is devoted to treating patients with optic disc drusen (ODD), a condition that affects the optic nerve and vision. While it is a disease almost as prevalent as glaucoma, there is still much unknown about the disease and how to prevent or treat resulting vision loss. flag with shipwreckWebMay 17, 2024 · Terminology Optic disc edema describes the swelling of nerve fiber layer at the optic nerve head, and it is the consequence of many different pathological processes. … canon rebel t6 for astrophotographyWebNov 5, 2024 · Leber hereditary optic neuropathy (LHON) is a rare disease with a prevalence of 1 in 25,000 births. LHON usually presents in young males, with painless loss of visual acuity in one or both eyes. Recently an autosomal recessive form of the disease (arLHON or LHONAR) has been described, which is caused by a biallelic mutation in the DNAJC30 … flag with shipWebMar 8, 2024 · Drusen of the Optic Nerve. Drusen can also occur in the optic nerve. These drusen are made up of protein and calcium salts and generally appear in both eyes. Unlike the drusen associated with AMD, optic nerve drusen (also known as optic disc drusen) are not related to aging, may be inherited, and typically appear in children. flag with ship wheelWebThe optic disc is elevated and its surface is covered by cotton wool spots (damaged axons) and flame hemorrhages (damaged vessels). Four I's: increased intracranial pressure (papilledema), infarction, inflammation, … canon rebel t6 dslr camera with wi-fiWebMay 6, 2024 · Papilledema refers to optic disc edema due to increased intracranial pressure, while optic disc edema is the more general term that can be from any etiology. Pathology Etiology idiopathic intracranial hypertension (pseudotumor cerebri) intracranial masses primary CNS malignancies cerebral metastases hydrocephalus extra-axial fluid collection flag with sickleWebThe optic disc, macula and retinal vessels on the fundus. Optic disc Find a blood vessel and track its progress in until you find the optic disc. To do this, follow it in the direction in which the vessel amalgamates with others, forming fewer and fewer vessels. canon rebel t6 lens hood