Papilledema and Idiopathic Intracranial Hypertension - PMC
Inferior nasal step in the left eye. A, The gray tone depiction of the visual field shows enlargement of the physiologic blind spot and an inferonasal step, respecting the nasal horizontal meridian. B, The dark boxes on the pattern deviation plot confirm the defect. The step corresponds to the horizontal raphe of the retina that separates the ...
Papilledema - EyeWiki
Formal (typically automated) perimetry commonly shows enlarged blind spots and nerve fiber layer type visual field defects that are similar to those found in glaucoma, for example a nasal step, arcuate scotoma and even a constricted field can be seen in severe cases.
Papilledema: A review of etiology, pathophysiology, diagnosis, and ...
2022年7月1日 · Papilledema is optic nerve head edema secondary to raised intracranial pressure (ICP). It is distinct from other causes of optic disk edema in that visual function is usually normal in the acute phase.
Papilledema - an overview | ScienceDirect Topics
The first irreversible visual field defect is likely to be a nasal step. Arcuate scotomas as extensions of a nasal step follow whereas constriction usually occurs later in the course. Differential diagnosis. The differential diagnosis of papilledema includes pseudopapilledema and disc edema without increased intracranial pressure ...
Papilledema - StatPearls - NCBI Bookshelf
2023年8月8日 · Papilledema is a disease entity that refers to the swelling of the optic disc due to elevated intracranial pressure (ICP). This term should be distinguished from disc edema which specifies a broader category of optic disc swelling secondary to other etiologies. Also, it is worth noting that ICP may elevate in the absence of optic disc swelling.
Neuro-ophthalmology Questions of the Week: Papilledema
2017年12月20日 · Visual loss from papilledema happens with any cause of papilledema. Hence it is very important to look for papilledema in all patients with headache or known hydrocephalus, brain tumor, or meningitis and to provide urgent treatment to prevent visual loss when papilledema is present. Patients with papilledema often have no visual symptoms initially.
European Headache Federation guideline on idiopathic intracranial ...
2018年10月8日 · Ophthalmic examination should include: visual acuity, a pupil examination, formal visual field assessment and dilated fundal examination to evaluate the papilloedema. The typical visual field findings are that of an enlargement of the blind spot, peripheral constriction and or an inferior nasal step or partial arcuate defect [22, 29] (Fig. 2).
Description: Field loss respecting the nasal horizontal midline with at least 1 abnormal point outside 150. No more than 1 point may be on the temporal side. Vertically oriented field defects should always raise the suspicion of pathologies on the visual pathway beyond the retina, particularly if it respects the vertical midline.
Papilledema: Causes, treatments, symptoms, and diagnosis
2022年1月20日 · Stage 1: Very early papilledema with obscuration of the nasal border of the disc. Stage 2: Early papilledema with obscuration of all borders, an elevation of the nasal border, and a halo.
Idiopathic intracranial hypertension and visual function
2007年1月22日 · Idiopathic intracranial hypertension is a relatively common condition (incidence up to 19/100 000/year in the high-risk group of obese women in reproductive age range) causing headaches with papilloedema. Detailed investigations are required to exclude other causes of raised intracrainal pressure.