orbita, globo ocular, la conjuntiva capsula de tenon paredes orbitarias: superior ( techo): formada por el hueso frontal en su profundidad el ala menos del. Non-contrast CT is useful in the initial evaluation of orbital and globe trauma for the assessment of fractures, extra-ocular muscle herniation and. Aug 30, · “El torero Juan José Padilla sufre estallamiento de glóbulo ocular por cornada” EfektoTV Deportes: – Duration: Efekto Televisión 1,,
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Find articles by Kong Yong Goh. Posterior Vitreous Detachment In old age, the vitreous may shrink and form clumps leading to ‘floaters’.
Eye Globe Abnormalities on MR and CT in Adults: An Anatomical Approach
A primary understanding of the globe anatomy is key to characterising both traumatic and non-traumatic globe abnormalities. Breast and lung are the most common primary neoplasms leading to metastases.
Considerations include metastases highly likely given clinical history with amelanocytic melanoma no T1W hypointensity; images not shownless likely differential. Non-contrast CT is useful in the initial evaluation of orbital and globe trauma for the assessment of fractures, extra-ocular muscle herniation and suspected globe rupture. Uveal Tract Middle Layer The uveal tract consists of the iris, ciliary body and choroid. Retina Inner Layer The retina is the innermost sensory layer of the globe and consists of two estallamineto.
In addition, knowledge of incidental degenerative changes, globe implants and fillers ocuoar important to prevent unnecessary work-up. The appearance of melanoma is non-uniform on imaging due to the varying levels of melanin. Abnormalities of the globe. Review of orbital imaging. Knowledge of the imaging features of both traumatic and non-traumatic globe abnormalities is necessary to ensure appropriate ophthalmology referral and accurate diagnosis.
Other globe neoplasms also predominantly involve the highly vascular uveal tract and include metastases commonly breast and lung estallamifnto, benign neoplasms such as hemangiomas, and inflammatory processes such as sarcoidosis 6.
In old age, the vitreous may shrink and form clumps leading to ‘floaters’.
Guía de la salud ocular – Enfermedades, problemas y condiciones oculares
Published online Aug Endophthalmitis Endophthalmitis represents inflammation or infection involving the anterior chamber and vitreous humour. The radiologist has an important role in primary diagnosis contributing to appropriate ophthalmology referral, thereby preventing devastating consequences such as vision loss.
The choroid merges with the ciliary body at the ora serrata and extends posteriorly to the optic nerve head. CT is also useful for evaluation of globe calcifications, especially in the case of retinoblastoma 1. The uveal tract is highly vascular and contains pigmented melanocytes. MRI provides exquisite soft tissue contrast and the sclera can be distinguished from the choroid and retina.
On MR and CT, posterior vitreous detachment appears as a membrane within the vitreous cavity detached from the optic disc and attached at the ora serrata. This structure provides nourishment to the retina 4. The episcleral space is a potential space that can extend between the fascia and the sclera 1.
It attaches to the ciliary body, which consists of the aqueous humour producing anterior pars plicata and the posterior pars plana. Axial non-contrast image from brain CT assessment of altered mental state shows right phthisis bulbi with irregular, scarred, shrunken right globe and dense internal calcification. Bilateral bands of hyperdensity that do not conform to insertions of extra-ocular muscles, are consistent with prior bilateral scleral bands for treatment of retinal detachment.
Axial non-contrast image from brain CT assessment of traumatic head injury shows left phthisis bulbi with irregular, scarred, shrunken globe and left optic disc calcification.
Abstract Eye globe abnormalities can be readily detected on dedicated and non-dedicated CT and MR studies. Additional avidly enhancing lesion is seen arising from lateral choroid of left globe without associated chorioretinal detachment.
Bilateral episcleral fluid collections white asterisks with distortion of globes are likely due to scleral degeneration or necrosis. The differential diagnosis can be made easier and refined by categorising the abnormalities according to the layers and estallamisnto compartments of the globe. Cavernous malformations may be associated with Sturge-Weber syndrome, and can be complicated by retinal tears and detachment.
Underlying Von Hippel-Lindau disease was key consideration. No choroidal detachment is detected. The sclera is altered in thickness and shape throughout life.
Traumatismo ocular – Wikipedia, la enciclopedia libre
Enhancing lesion suggestive of neoplastic wstallamiento is absent. Understanding the anatomy is a key component in the structured approach to a differential diagnosis. Corresponding photograph shows pigmented lesion arising from inferomedial globe wall with surrounding hemorrhage.
The ciliary body musculature attaches to the lens via the zonular fibers and is important for accommodation. Buckling and defect in superior sclera Bwhite arrow with loss of globe volume is consistent with globe rupture. Scleral bands would appear more linear, as compared to punctate calcifications observed.
Bilateral focal protrusions through thinned sclera posteriorly are consistent with posterior staphylomas white arrows.
Received Aug 23; Accepted Jun 5. Estallamisnto sclera is enveloped by the fibroelastic Tenon’s capsule, which fuses with the bulbar conjunctiva and is perforated posteriorly by the optic nerve sheath. Lens dislocation can be well visualised and is typically secondary to trauma or degeneration of the zonular fibers Fig.
Ciliochoroidal detachment extends anterior to expected location of ora serrata Estallamkentowhite ocukar. High-resolution MRI facilitates evaluation of chorioretinal detachments and potential underlying neoplasms.
Other globe shape abnormalities include colobomas congenital defects in the layers of the globe including the optic disc and phthisis bulbi representing an end-stage atrophic globe Figs.
Imaging of orbital trauma. Axial T1WI shows lobulated hyperintense lesion arising in anteromedial left globe with endophytic extension into vitreous.