What causes optic nerve hemorrhage?
The hemorrhage is a secondary event resulting from tissue damage. Other authors suggest various vascular etiologies, for example, ischemic microinfarction in the optic nerve head or perturbation of the blood-retinal barrier.
What does bleeding of optic nerve mean?
Optic disc hemorrhage is a common clinical feature of glaucoma, indicating active disease with likely progression and visual field loss. These small bleedings form notch-like lesions at the edge of the optic disc in the nerve fiber layer and often correlate with visual field loss.
What is optic disc haemorrhage?
Disc hemorrhages tend to be small and extend from within the RNFL of the optic disc into the peripapillary region. DH is often associated with notching and structural change in the optic disc rim, focal defects of the RNFL, progressive defects of the visual field (VF), and beta zone peripapillary atrophy (βPPA).
What is optic nerve sheath hemorrhage?
Optic nerve sheath hemorrhage is shown to result from rupture of dural and bridging vessels of the optic nerve sheath; this we con- clude is subsequent to optic nerve sheath dilatation caused by the transmission of in- tracranial pressure through the subarachnoid communication between the optic nerve sheath and the …
Does eye hemorrhage go away?
Most people will not need any treatment. This condition often goes away on its own. Your subconjunctival hemorrhage will likely go away in a few weeks. It will first turn from red to brown, and then to yellow.
Can damaged optic nerves be repaired?
Damage to the optic nerve is irreversible because the cable of nerve fibers doesn’t have the capacity to regenerate, or heal itself, when damage occurs.
What is a flame haemorrhage?
Flame shaped hemorrhages: These hemorrhages are diffuse, found in the posterior pole, and last approximately 6 to 12 weeks. They occur typically in diseases affecting superficial retinal capillary plexus secondary to arterial diseases like hypertension, blood dyscrasias, and anemias.
What is Drance hemorrhage?
Disc hemorrhages that lie within the peripapillary retinal nerve fiber layer are known as Drance hemorrhages. They occur more often in patients with normal-tension glaucoma; one prospective study reported an incidence of 43% in these patients.
What is optic nerve head?
The optic disc or optic nerve head is the point of exit for ganglion cell axons leaving the eye. Because there are no rods or cones overlying the optic disc, it corresponds to a small blind spot in each eye.
Can glaucoma cause eye hemorrhage?
The eye pressure is usually lower right after the injury occurs. Once the wound is closed, tissue inside the eye can become swollen and irritated, and bleeding can occur, causing the eye pressure to rise. Short term rises in eye pressure are controlled in ways similar to cases of blunt trauma.