retina
Last reviewed 07/2021
Retinal causes of sudden visual loss include:
- retinal arterial occlusion:
- branch occlusion results in partial loss of vision
- central occlusion results in complete loss of vision
- central retinal vein occlusion - extensive fundal haemorrhage
- amaurosis fugax - where a curtain descends over the vision for minutes. An embolus may be visible on the retina and a carotid bruit may be present.
- retinal detachment involving macula; symptoms and signs include:
- flashing lights
- floaters
- visual field loss spreading centrally