Items tagged “eye”
103 results found
Article
Cornea
The cornea forms the fibrous layer of the anterior portion of the eye. It functions to refract light entering the eye.
Summary
location: anterior one-sixth of the eyeball
blood supply: avascular
innervation: long ciliary nerves
relations: continuous with the sclera posteriorly and covered...
Article
Sclera
The sclera (plural: scleras or sclerae) is the fibrous, opaque white, coat of the eye. It functions to protect the intraocular contents.
Summary
location: posterior fifth-sixths of the eyeball
blood supply: ciliary arteries
innervation: ciliary nerves
relations: anteriorly continuous with ...
Case
Normal crystalline lens on CT
Published
05 Jan 2019
50% complete
CT
Case
Normal crystalline lens on MRI
Published
05 Jan 2019
50% complete
MRI
Case
Staphyloma
Published
18 Feb 2019
68% complete
MRI
Article
Posterior vitreous detachment
Posterior vitreous detachment (PVD), also known as hyaloid detachment, occurs when the retinal layer and vitreous body/posterior hyaloid membrane dissociate, with an intervening fluid collection forming in the subhyaloid space. It is thought to be a common consequence of aging, occurring in more...
Case
Postoperative panophthalmitis
Published
03 Jul 2019
94% complete
Ultrasound
Article
Lenticonus
Lenticonus is a rare congenital abnormality characterized by conical bulging of the posterior or anterior lens surface. If the bulging is global rather than conical, the condition is referred to as lentiglobus 1.
Clinical presentation
It produces a decrease in visual acuity and irregular refra...
Article
Choroid (eye)
The choroid is part of the uveal layer of the eye along with the ciliary body and iris 1.
Summary
location: posterior aspect of the globe
function: vascularization of the outer retina
arterial supply: posterior ciliary arteries
innervation: short ciliary nerves, long ciliary nerves
relat...
Article
Nasolacrimal injury
Nasolacrimal injuries are reported to be common and may result in temporary or permanent dysfunction.
Epidemiology
Fracture of the nasolacrimal apparatus has been reported in ~10% of patients with craniofacial fracture, with ~10% of these reporting symptoms of epiphora or dacryocystitis 1.
...
Article
Lacrimal sac mass
Lacrimal sac masses are very uncommon and more commonly have a malignant (~80%) rather than benign (~20%) etiology.
Pathology
Etiology
inflammatory
granulomatosis with polyangiitis
sarcoidosis
orbital pseudotumor
IgG4-related disease
Sjogren syndrome
neoplastic
epithelial tumors
beni...
Article
Central retinal vein occlusion
A leading cause of monocular vision loss, central retinal vein occlusion (CRVO) is most commonly caused by thrombosis of the central retinal vein, resulting in retinal edema and hemorrhage.
Terminology
Occlusion of the central retinal vein is subclassified as ischemic and non-ischemic based on...
Article
Hollenhorst plaque
Hollenhorst plaques are seen on clinical examination of the retina and are the result of cholesterol emboli at the retinal arteriole bifrication 1. They most commonly originate from the carotid or aortic atheroscleroritc plaque 2. Hollenhorst plaques are a a risk factor for ischemic stroke and a...
Case
Brown syndrome
Published
31 Aug 2021
77% complete
MRI
Article
Trochlea (eye)
The trochlea is a cartilaginous structure acting as a pulley for the superior oblique muscle of the eye.
Gross anatomy
The trochlea inserts on the trochlear fovea and spine located on the anteromedial part of the orbital roof. The tendon of superior oblique muscle passes through it 1.
Functi...
Article
Age related macular degeneration
Age-related macular degeneration (AMD) is an eye disease that affects central vision. It occurs when aging causes damage to the macula. The macula is responsible for fine detailed vision also known as central vision.
Case
Staphyloma
Published
21 Feb 2022
80% complete
CT
Case
Ocular foreign body
Published
13 Mar 2022
98% complete
CT
Case
Scleral buckle
Published
24 Apr 2022
95% complete
CT
Case
Orbital floor blow-out fracture on infraorbital foramen
Published
13 May 2022
95% complete
CT
Unable to process the form. Check for errors and try again.