A new University of Liverpool study, published today in Brain and Behaviour, examines the wide range of visual impairments developed by stroke survivors.
Approximately 65% of acute stroke survivors have visual impairment which typically relates to impaired central or peripheral vision, eye movement abnormalities, or visual perceptual defects.
Symptoms can include blurred or altered vision, double or jumbled vision, loss of visual field, reading difficulty, inability to recognize familiar objects or people and glare.
Post stroke visual impairment (PSVI) is currently an under researched area. However the full range of impairments is currently unknown.
In order to profile the full range of visual disorders researchers from the University's Department of Health Services Research, led by Dr Fiona Rowe, examined the visual impairment screening/referral forms from 915 post-stroke patients from 20 NHS hospital trusts.
The researchers found that the average number of days post-stroke onset before a visual assessment was conducted was 22.
Once assessed 92% were confirmed to have a visual impairment, of these:
Overall 84% were visually symptomatic with visual field loss the most common complaint followed by blurred vision, reading difficulty, and diplopia.
Treatment options were provided to all with confirmed visual impairment. Targeted advice was most commonly provided along with refraction, prisms, and occlusion.
Of the research Dr Rowe, said: "There are a wide range of visual disorders that occur following stroke and, frequently, with visual symptoms. There are equally a wide variety of treatment options available for these individuals.
"Our research highlights the fact that ALL stroke survivors require early screening for visual impairment and warrant referral for specialist assessment and targeted treatment specific to the type of visual impairment."
Materials provided by University of Liverpool. Note: Content may be edited for style and length.
Disclaimer: DoveMed is not responsible for the accuracy of the adapted version of news releases posted to DoveMed by contributing universities and institutions.
References:
Fiona J. Rowe. (2017). Vision In Stroke cohort: Profile overview of visual impairment. Brain and Behavior. DOI: 10.1002/brb3.771
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