Sydney: Scientists have now created a new vision test that tracks the response of stroke patients to different colours and assesses which part of the brain has been damaged - increasing the chances of survival.Strokes are the world`s sixth commonest cause of death, accounting for almost five percent of all fatalities, according to WHO figures.The test requires patients to look into a device for about 10 minutes, enabling it to be used in the early stages of a stroke - even if the patient cannot move their limbs or speak, the journal Investigative Ophthalmology and Visual Science reported.
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