Items tagged “orbit”
122 results found
Case
Spheno-orbital meningioma
Published
18 Nov 2011
50% complete
MRI
Case
Orbital pseudotumor
Published
24 Oct 2015
27% complete
MRI
Case
Orbital lymphoma
Published
02 Dec 2011
86% complete
MRI
Case
Benign intracranial hypertension
Published
17 May 2012
100% complete
MRI
CT
Annotated image
Case
Orbital blowout fracture
Published
18 Jun 2012
74% complete
CT
Case
Acute invasive fungal sinusitis with orbital involvement
Published
17 Dec 2012
71% complete
CT
Case
Lymphoma - with multi-site involvement
Published
27 Mar 2013
87% complete
CT
Case
Dermolipoma of the orbit
Published
03 Aug 2013
89% complete
MRI
Article
Lacrimal apparatus
The lacrimal apparatus consists of the lacrimal gland and the nasolacrimal drainage apparatus.
The gland produces tears secreted into the lateral aspect of the superior fornix. The serous fluid washes over the eye and is drained at the medial canthus by the superior and inferior lacrimal canal...
Article
Lacrimal canaliculi
The lacrimal canaliculi form the first part of the nasolacrimal drainage apparatus that drains tears produced by the lacrimal gland.
Gross anatomy
There are two lacrimal canaliculi - superior and inferior on each side. They commence at the superior and inferior lacrimal puncta, which drain te...
Article
Nasolacrimal duct
The nasolacrimal duct (NLD) is the terminal part of the nasolacrimal apparatus.
Gross anatomy
The nasolacrimal duct is the inferior continuation of the lacrimal sac and is ~17 mm in length in total. The duct runs in the bony nasolacrimal canal. There are two parts to the nasolacrimal duct:
in...
Article
Optic neuritis
Optic neuritis denotes inflammation of the optic nerve and is one of the more common causes of optic neuropathy. It can be thought of as broadly divided into infectious and non-infectious causes, although the latter is far more frequent. On imaging, optic neuritis is most easily identified as a ...
Article
Chorioretinal lacunae
Chorioretinal lacunae refer to punched out lesions in pigmented layer of retina, usually around the optic disc. It is a considered a consistent feature of Aicardi syndrome.
Case
Orbital pseudotumor
Published
28 Nov 2014
83% complete
CT
Case
Senile calcific scleral plaques
Published
20 Dec 2014
84% complete
CT
Article
Congenital cataract
Congenital cataracts are a major cause of blindness with early detection the most important factor in reducing impact on future vision.
Epidemiology
Incidence is ~3 per 100,000 in the United Kingdom 1. Although the incidence tends to be higher in areas with increased rates of congenital infec...
Article
Scleritis
Scleritis refers to inflammation of the sclera. It has a wide range of causes.
Epidemiology
It can affect any age group but usually those between ages 30 and 50 years. There is a recognized increased female predilection (F:M of ~2:1).
Pathology
Information on the pathogenesis of scleritis is...
Case
Intraorbital dermoid cyst
Published
06 Feb 2016
50% complete
MRI
CT
Article
Intraconal orbital lesions
Intraconal orbital lesions are broadly divided into two main groups; those with or without involvement of the optic nerves.
Lesions with optic nerve involvement:
optic nerve glioma
optic nerve meningioma
optic neuritis
pseudotumor
lymphoma and leukemia
intracranial hypertension
retinobla...
Article
Enlarged extraocular muscles (differential)
There is a short list of causes for enlarged extraocular muscles. The differential can be narrowed by the clinical history, known systemic illness, pattern of specific muscles involved, the muscle morphology, as well as concurrent findings outside the muscles 3:
inflammatory, infectious, and de...
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