Why do so many older adults suddenly develop double vision, seeing two of everything when there is only one? The cause is often not a stroke or a brain tumor, although those conditions can create double vision. Instead, the problem is often caused by excessive sagging of the eye muscles with age, sagging that diminishes the strength of the eye muscles. This type of double vision can be corrected with glasses or, in some cases, surgery to reposition the eye muscles. Click on the link below to see our research into a surgical technique that can eliminate the double vision.