It turns a simple eye test can help identify risk of stroke. From the photographs of the retina, the doctor can see the damage caused by high blood pressure. Damage known as hypertensive retinopathy This increases the risk of stroke.
In the UK high blood pressure is the number one risk factor for stroke, causing 50 percent of the 152 thousand stroke within a year. Most stroke patients are not experiencing the early symptoms and do not know him at risk of stroke.
New research found a picture of the eye’s retina could help identify risk of stroke. Examination of retinal photographs has been widely available in the UK, experts began suggesting these checks in anticipation of a stroke.
Photographs of the retina is relatively simple. Optometrists only needs to photograph the retina to provide special eye drops that make the pupil dilated. The opening of the back of the eye can be checked using a fundus camera, a camera mikroskp with the camera attached.
“This tool is now used National Health Service to examine the changes caused by diabetes such as damage to blood vessels,” says Dr. Bernie Chang, a consultant ophthalmologist at Leeds and vice president of the Royal College of Ophthalmology.
Research about the eye exam is published in the American Heart Association journal Hypertension. The study was photographing the eyes of 2,907 people with high blood pressure who had previously suffered a stroke and everyone grouped by damage to blood vessels in the back of the eye or hypertensive retinopathy. They were then followed for 13 years. During that 146 people suffered a stroke.
The researchers found a higher risk of stroke occurred in 25 percent of those who experience mild hypertensive retinopathy. While 137 percent higher risk in those with moderate or severe hypertensive retinopathy, even after they adjusted the other stroke risk factors such as age, body mass index and blood pressure numbers.
Even among patients who received the drug control blood pressure, blood clotting risk 96 percent higher in those with mild hypertensive retinopathy and 198 percent higher in those with moderate or severe stage.
Researchers of the study and professor of the Singapore Eye Research Institute at the National University of Singapore Dr. Mohammad Kamran Ikram, said retina store valuable information regarding the blood vessels in the brain. “Retinal imaging is non-invasive and inexpensive way to check the blood vessels of the retina,” he added.
Dr. Clare Walton of the Stroke Association UK, said, “This study found a blood vessel damage the eyes can indicate a person’s potential risk for a stroke. Despite the positive results, more research is needed before doctors change a patient’s risk assessments for stroke. “