Patent attributes
A device to carry out tests of the macula of a subject's eye to identify disease such as age related macular degeneration. The device includes a stimulus light source comprising a stimulus spheroidal chamber with a stimulus light located therein to emit light through an aperture in the stimulus spheroidal chamber into the eye of a subject. The stimulus light source may include a plurality of light emitting diodes of differing colors. A controller controls the intensity and the color of the light emitted through the aperture of the stimulus spheroidal chamber to the subject. There is also an adapting light source comprising a light contained within an adapting spheroidal chamber. The adapting light source provides a bright light that can be used to remove the subject's dark adaption. There is also an alignment detection system that verifies that the gaze of the subject is toward the stimulus light source.
