Low vision services Low vision is vision loss that is unable to be corrected by regular glasses, contact lenses, or surgery. It is vision loss that has happened from an ocular disease. Some people are born with low vision while some develop it with progression of an ocular disease. There are a lot of technologies, devices, methods and aids that can assist you with your vision loss. We provide low vision assessment exams and work with both the CNIB as well as the Sight Enhancement Clinic in order to provide you with the necessary tools and devices to help you with your activities of daily living.