Eyes and Sight Worse eye sight is often thought of as a normal part of aging. But it does not have to be so. Decreased vision has been linked to high toxic load and oxidative stress (free radicals). Poor liver health and dehydration may also cause weakening vision. Allergies can upset the eyes too. Take a look at all our Blogs about Eyes and Sight. You might enjoy listening to our Podcasts for current information on health repair and maintenance.