Original broadcast date: March 1, 2009

How do older drivers know when to turn in their keys? What are some of the physical factors that contribute to this decision? This life-changing decision is a flashpoint for debate about the impact of health upon the 30 million elderly drivers in the US and three million in Canada elderly and their driving ability.

The Salisbury Eye Evaluation and Driving Study (SEEDS), conducted by researchers affiliated with Johns Hopkins University, looked at changes in vision, cognition and the general health status of more than 1,200 licensed drivers aged 67-87 and recently published their results in the journal Investigative Ophthalmology & Visual Science.

• Dr. Lisa Keay, PhD, Senior Research Fellow, Injury Division at the The George Institute for International Health, Sydney University, Australia (author of this research while at Wilmer Eye Institute, Johns Hopkins University)