Fig 1 - uploaded by Bachi T Hathiram
Content may be subject to copyright.
The posttraumatic periorbital contusion which gives the eye a characteristic 'Raccoon-eye' look. Also, note the relative afferent pupillary defect seen in the affected eye (absence of pupillary constriction in response to light)
Source publication
Introduction: Traumatic optic nerve damage after craniofacial injury was first described by Hippocrates. 1 Although the natural history of traumatic optic neuropathy is unknown, recent studies suggest that high dose steroids and, even surgical decompression of the optic canal or the nerve sheath (in cases of nerve sheath hematoma) may restore visio...
Contexts in source publication
Context 1
... with head injury who are suspected to have a coexistent optic nerve trauma [which may be indicated by contusions around the eye (the characteristic 'raccoon sign') ( Fig. 1), an afferent pupillary defect ( Fig. 1), with corresponding fundoscopic changes of disk edema and vascular congestion or an actual complaint of loss of vision in one/both eyes] warrant urgent radiological investigations. While a high resolution CT scan of the paranasal sinuses and orbit would reveal any obvious fracture, hemosinus and ...
Context 2
... with head injury who are suspected to have a coexistent optic nerve trauma [which may be indicated by contusions around the eye (the characteristic 'raccoon sign') ( Fig. 1), an afferent pupillary defect ( Fig. 1), with corresponding fundoscopic changes of disk edema and vascular congestion or an actual complaint of loss of vision in one/both eyes] warrant urgent radiological investigations. While a high resolution CT scan of the paranasal sinuses and orbit would reveal any obvious fracture, hemosinus and coexisting trauma, such as fractures of ...
Context 3
... is shone on the 'affected' eye, and the pupillary response is compared to its 'normal' counterpart. Features sought after are, a lack of briskness/sluggish miosis as compared to the normal side, a partial or complete absence of miosis. This usually indicates a defect in the afferent pupillary pathway and has been termed as a 'Marcus Gunn' pupil ( Fig. 1). It is best interpreted along with fundoscopic and radiologic signs. It may also be elicited subjectively, by asking the patient to compare the difference in the brightness perceived between the unaffected and affected eyes. 10 • Fundoscopic examination: Various appearances can manifest in traumatic optic neuropathy namely disk edema, ...
Citations
... Visual prognosis depends upon etiology, stage of the disease and also on the time and effectiveness of management of the cause. 9,10 Glaucomatous blindness can be prevented by early diagnosis and treatment which can stop the progression of the disease. Retinitis Pigmentosa has no effective treatment till date, and its incidence be reduced by genetic counselling, discouraging consanguineous marriages and limitation of number of off-spring in married individuals with RP. ...
p class="abstract">Traumatic optic neuropathy is a complication that arises due to head injury, high velocity road traffic accidents causing maxillofacial trauma. Due to involvement of optic nerve which endangers vision, there is a race against to save the vision. Endoscopic optic nerve decompression is a useful procedure for optic nerve decompression. We report a case of ischaemic optic neuropathy following road traffic accident, who underwent endoscopic optic nerve decompression within 6 hours of injury.</p
