Abstract: In one aspect, there is provided a handheld vision tester. In this particular embodiment, the handheld vision tester comprises a display, cursor control, and an interface port. The display delivers vision tests to a user. The user interacts with the vision tests by using the display and cursor control. The interface port allows for communication of results of the vision tests from the handheld tester to external devices.

Abstract: A binocular viewer, a method of measuring and training vision that uses a binocular viewer and a vision measurement and training system that employs a computer to control the binocular viewer. In one embodiment, the binocular viewer has left and right display elements and comprises: (1) a variable focal depth optical subsystem located in an optical path between the display elements and a user when the user uses the binocular viewer and (2) a control input coupled to the left and right display elements and the variable focal depth optical subsystem and configured to receive control signals operable to place images on the left and right display elements and vary a focal depth of the variable focal depth optical subsystem. In another embodiment, the binocular viewer lacks the variable focal depth optical subsystem, but the images include at least one feature unique to one of the left and right display elements.

Abstract: A binocular viewer, a method of measuring and training vision that uses a binocular viewer and a vision measurement and training system that employs a computer to control the binocular viewer. In one embodiment, the binocular viewer has left and right display elements and comprises: (1) a variable focal depth optical subsystem located in an optical path between the display elements and a user when the user uses the binocular viewer and (2) a control input coupled to the left and right display elements and the variable focal depth optical subsystem and configured to receive control signals operable to place images on the left and right display elements and vary a focal depth of the variable focal depth optical subsystem. In another embodiment, the binocular viewer lacks the variable focal depth optical subsystem, but the images include at least one feature unique to one of the left and right display elements.

Abstract: A handheld vision tester and a method of self-testing vision of a user of the handheld vision tester are provided. The method ensures that a display of the handheld vision tester is within an acceptable distance to eyes of the user. Variations of the acceptable distance are compensated for. The method further displays different shapes, either dynamically or statically, on the display to the user. The method also allows for input to the handheld vision tester by the user in response to the different shapes displayed. Results of the self-test are determined from the inputs to the handheld tester by the user.

Abstract: In one aspect, there is provided a handheld vision tester comprising a display, cursor control, interface port, and camera. The display delivers a series of images making up vision tests to a user who interacts with the vision tests by using the display and cursor control of the handheld vision tester. The camera verifies the user is taking the vision tests. The results of the vision tests are stored in the handheld communication device. The interface port allows for communication of the stored results of the vision tests with external devices. In another aspect, there is provided a calibration system for the handheld vision tester. The calibration system includes a stand to hold the handheld vision tester and a reflective surface substantially parallel to a display of the handheld vision tester.

Abstract: A vision testing system and method to assess vision function. In one embodiment, the vision testing system comprises: (1) a display; (2) a computer coupled to the display and configured to provide dynamic images, each including a substantially constant fixed point of fixation; and (3) a human input device coupled to the computer, wherein responses from a test subject are fed back to the computer to assess the test subject's vision function.

Abstract: A vision testing system and method to assess vision function. In one embodiment, the vision testing system comprises: (1) a display; (2) a computer coupled to the display and configured to provide dynamic images, each including a substantially constant fixed point of fixation; and (3) a human input device coupled to the computer, wherein responses from a test subject are fed back to the computer to assess the test subject's vision function.