| 摘要 |
A battery powered, hand held device to determine of there is significant retinal ischemia in the eye of a patient. The device detects the consequences of impaired blood flow in the eye of the patient and has a light source for emitting a 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 patients 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.
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