Amaurosis fugax is a transient uniocular loss of vision either due to lack of blood supply to the brain or to the retina itself.
The causes are broadly divided into four categories:
ONEHI (Oh I just said a Hi ;p )
Ocular
Neurologic
Embolic
Hemodynamic
Idiopathic
OCULAR causes- GONEI (gone- eye)
- Glaucoma (angle- closure)
- Ophthalmic artery obstruction
- Neuropathy of optic nerve
- Edema of optic disc
- Inflammatory causes (iritis, keratitis, blepharitis etc)
NEUROLOGIC causes- ICP
- Inflammation of optic nerve
- Classic migraine
- Papilledema
Now raised ICP may be due to any intracranial tumor which can also cause transient uniocular blindness. Also demyelinating diseases such as Multiple sclerosis can cause such condition due to uniocular conduction block resulting in defects in synaptic transmission.
EMBOLIC and HEMODYNAMIC causes- TAGEYE
- Transient ischemic attack
- Atherosclerosis (carotid, ophthalmic)
- Giant cell arteritis
- Excess vasoconstriction (vasospasm) for short period
- Valvular defects (cardiac arrhythmias)
- Erythematosus (systemic lupus)
Thats all
- Jaskunwar Singh
The causes are broadly divided into four categories:
ONEHI (Oh I just said a Hi ;p )
Ocular
Neurologic
Embolic
Hemodynamic
Idiopathic
OCULAR causes- GONEI (gone- eye)
- Glaucoma (angle- closure)
- Ophthalmic artery obstruction
- Neuropathy of optic nerve
- Edema of optic disc
- Inflammatory causes (iritis, keratitis, blepharitis etc)
NEUROLOGIC causes- ICP
- Inflammation of optic nerve
- Classic migraine
- Papilledema
Now raised ICP may be due to any intracranial tumor which can also cause transient uniocular blindness. Also demyelinating diseases such as Multiple sclerosis can cause such condition due to uniocular conduction block resulting in defects in synaptic transmission.
EMBOLIC and HEMODYNAMIC causes- TAGEYE
- Transient ischemic attack
- Atherosclerosis (carotid, ophthalmic)
- Giant cell arteritis
- Excess vasoconstriction (vasospasm) for short period
- Valvular defects (cardiac arrhythmias)
- Erythematosus (systemic lupus)
Thats all
- Jaskunwar Singh
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ReplyDeleteHey! Thanks yo
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