Welcome to portal four, where things get even more interesting. Here we’re going to focus in on a much neglected (and even maligned?) domain of eye care where I’ve had numerous colleagues say their professional excitement and learning opportunities have been reinvigorated – binocular vision! As you’ll soon learn, not only does binocular vision assessment add so much more to your clinical picture, and make optometric life more interesting, it could be the secret sauce that helps us bridge the gap towards 100% efficacy… or at the very least answer questions in cases where we get lower efficacy than expected. In this portal we’re going to focus on binocular vision – assessment, diagnosis and management.