A persistent curtain like defect in your outer visual field
This is a sign of retinal detachment and requires urgent surgical correction
Persistent sudden onset blurred central vision
This can be a sign of many serious eye conditions such as macular degeneration, diabetic retinopathy or a blockage in a retinal vein
A transient black curtain falling or rising in the vision that slowly recovers
This is a sign of amarosis fugax – a fleeting loss of vision related to micro-emboli collecting in the blood vessels of the retina
Blurred vision with severe headaches particularly over the temple region
In the 50s this could be a sign of giant cell arteritis that requires urgent treatment with oral steroids
Blurred vision in both eyes with headaches
This could be a sign of a raised intracranial pressure in the brain and needs urgent investigation