Eye tests predict Parkinson’s-linked cognitive decline 18 months ahead – study

Eye tests predict Parkinson’s-linked cognitive decline 18 months ahead – study (Yui Mok/PA)

Eyesight tests can predict which people with Parkinson’s disease will develop cognitive impairment and possible dementia 18 months later, new research suggests.

Scientists say the study, published in Movement Disorders, adds to evidence that vision changes precede the cognitive decline that occurs in many, but not all, people with Parkinson’s.