| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery powered, hand held device for determining whether there is serious retinal ischemia in the eye of a patient.SOLUTION: The device detects the consequences of impaired blood flow in the eye of the patient and has a light source for emitting light and a diffuser or diffuse spheroidal reflector that redirects the light from the light source toward the patient's eye. A set of electrodes contact the patient's skin proximate to the eye and receives an electrical signal representing the eye's electrical response to the light stimulus. A microcontroller interprets the electrical signal sensed by the electrodes by using an algorithm to determine the degree of retinal ischemia of the patient. In one embodiment, there is a control that establishes the intensity of the light stimulus by measuring and using the area of the pupil. |
