Apparatus for ocular motility testing comprising, an item of headgear 5 onto which is mounted: gaze-detection means 25 for determining the visual axis directions of one or both eyes of an observer 14 wearing the headgear in relation to a reference primary position; and projector means 10 for projecting...http://www.google.se/patents/US5838420?utm_source=gb-gplus-sharePatent US5838420 - Method and apparatus for ocular motility testing
