Unilateral Optic Atrophy Following Head Injury

Optic nerve injury after sudden traumatic rotation of the eye

“…The patients in several series describing optic nerve injury have all suffered contusions of moderate or severe energy levels (Anderson et al 1982;Seiff et al 1984;Edmund & Godtfredsen 1963) with signs such as unconsciousness, facial abrasions and haematomas, fractures of the skull and optic canal, ocular contusion and orbital haemorrhages with proptosis. A series of patients with optic nerve injury following blunt ocular trauma showed in every case such co-existent energetic injuries (Archer & Canavan 1983).…”

TRAUMATIC BITEMPORAL HEMIANOPIA and FRACTURE OF THE DORSUM SELLA

“…Several theories have been described to explain traumatic bitemporal hemianopia. The majority are based upon fractures of the optic canal and a tear of the chiasma (Hughes 1962;Edmund et al 1963; Anderson et a]. 1964;Logan et al 1967;Laursen 1971;Fiviari et al 1971).…”

“…Traquair (1935) claims that there is much resemblance between the field changes which occur in injury of the chiasma and in tumour cases, and he concludes that in each type of case, the vascular supply of chiasma is impaired. According to Edmund et al (1963), fracture in the optic canal and haemorrhage into the sheath of the optic nerve seems to have no direct connection with the visual problems. He also emphasized that the operation for decompression does not improve the final visual result.…”

State of the art on traumatic optic neuropathy

“…When occurring in multisystem trauma with midface involvement and serious brain injury, loss of consciousness is associated with TON in 50-72% of cases [1,4].…”