Abstract: A method and system of screening and monitoring a person for Alzheimer's disease, Mild Cognitive Impairment, and Lewy Body Dementia (Dementia) using the King-Devick Test are provided including providing a visual display and a timing device; displaying on the visual display one or more series of symbols arranged in a pattern; providing an indication to the person being screened to begin reading aloud the symbols arranged in the pattern; capturing with the timing device the completion time to read the one or more series of symbols arranged in the pattern; comparing the completion time with a baseline time to complete reading the one or more series of symbols; and determining whether the person has an “abnormal” result based on comparing the completion time with the baseline time.

Abstract: Systems and methods for improving saccadic eye movement are disclosed.

Abstract: A method of screening for Parkinson's disease, may include administering to a person in need of such screening a King-Devick Test, determining whether the person has a “normal” or “abnormal” result for the King-Devick Test, and recommending the person undergo additional testing and/or treatment for Parkinson's disease if the result is “abnormal.

Abstract: A device may include a magnifying lens having a focal length that defines a focal plane, a light source providing visible light directed toward the focal plane, and a controller. The controller may be programmed to receive a signal indicative of the distance from the device to an object, cause the light source to emit light at a first brightness if the distance is at least substantially equal to the focal length of the lens, and cause the light source to emit light at a second brightness, dimmer than the first brightness, if the distance is not at least substantially equal to the focal length of the lens.

Abstract: A device may include a magnifying lens having a focal length that defines a focal plane, a light source providing visible light directed toward the focal plane, and a controller. The controller may be programmed to receive a signal indicative of the distance from the device to an object, cause the light source to emit light at a first brightness if the distance is at least substantially equal to the focal length of the lens, and cause the light source to emit light at a second brightness, dimmer than the first brightness, if the distance is not at least substantially equal to the focal length of the lens.

Abstract: A device may include a magnifying lens having a focal length that defines a focal plane, a light source providing visible light directed toward the focal plane, and a controller. The controller may be programmed to receive a signal indicative of the distance from the device to an object, cause the light source to emit visible light at a first brightness if the distance is at least substantially equal to the focal length of the lens, and cause the light source to emit visible light at a second brightness, dimmer than the first brightness, if the distance is not at least substantially equal to the focal length of the lens.

Abstract: A device may include a magnifying lens having a focal length that defines a focal plane, a light source providing visible light directed toward the focal plane, and a controller. The controller may be programmed to receive a signal indicative of the distance from the device to an object, cause the light source to emit visible light at a first brightness if the distance is at least substantially equal to the focal length of the lens, and cause the light source to emit visible light at a second brightness, dimmer than the first brightness, if the distance is not at least substantially equal to the focal length of the lens.