We often hear that the eyes are the windows to the soul. Now science suggests they may also be windows to the brain.
Studies suggest that the first signs of Alzheimer's disease and other forms of dementia can be detected through eye exams.
What are the signs in the eye that may indicate dementia?
Research published in February in the journal Scientific reports Doctors at Loughborough University in the United Kingdom have revealed that a decrease in eye response speed may be an early indicator of cognitive decline, which appears 12 years before the clinical diagnosis of the disease.
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How can eyes indicate dementia?
In addition to a slow eye response, other signs include an enlarged avascular area in the center of the retina.
A 2018 study published in Gamma Ophthalmology It suggests that this increase may be observed up to 17 years before clinical symptoms of Alzheimer's disease appear.
Other indicators include loss of the ability to judge depth and a persistent blank stare, indicating confusion and lack of visual interaction.
Why can cognitive decline affect vision?
Doctors believe that vision is one of the first functions to be affected because it is processed in large areas of the brain, many of which are also responsible for memory.
As dementia progresses and toxins build up, these areas of the brain deteriorate, leading to decreased visual ability.
In the early stages, symptoms of cognitive decline may be mistaken for normal aging. However, family members and loved ones should be aware of changes in visual response and seek medical attention if abnormalities are found.
Identifying these symptoms early allows for more effective treatment and improved quality of life.
Other signs of dementia
- memory loss;
- Problems with language use.
- Confusion.
- Problems performing normal daily tasks;
- Preference for sweet foods;
- Loss of sense of smell
- Seizures;
- incontinence;
- Frequent falls and fainting.
- Visual hallucinations.
- Sleep disorders;
- Changes in mood and behavior.
Charlotte Whitmore is a contributor at Mediarunsearch.co.uk, covering a broad range of topics including news, politics, business, technology, sport, entertainment, and lifestyle. She focuses on delivering clear, balanced reporting and practical information that helps readers stay informed about current events and emerging developments. Her work highlights stories that matter to everyday audiences, with an emphasis on accuracy, relevance, and accessible journalism that keeps readers connected to the issues shaping the UK and beyond.