Patent ID: 9492081
Filing Date: 2016-11-15
CPC Classification: A61B

Claim Text:
1. A retinal densitometer, comprising: an illumination unit configured to output bleaching illumination for photo-bleaching an eye and reflectance illumination at a plurality of wavelengths for determining reflectance of the eye at each of the plurality of wavelengths; an imaging device configured to output image data corresponding to an image of the eye at each of the plurality of wavelengths of reflectance illumination; and a control unit configured to control the illumination unit and the imaging device to output the bleaching illumination, the reflectance illumination at the plurality of wavelengths, and the image data according to a predetermined sequence; wherein the control unit is configured to control the illumination unit to output the bleaching illumination during a photo-bleaching period preceding a dark recovery period; wherein the control unit is configured to control the illumination unit to output the reflectance illumination during the dark recovery period and to control the imaging device to periodically output image data corresponding to the reflectance illumination reflected from the eye, wherein during the dark recovery period the illumination unit is controlled by the control unit to sequentially output the reflectance illumination at each of the plurality of wavelengths according to the predetermined sequence; and wherein the control unit is configured to control the illumination unit to repeatedly output the predetermined sequence of reflectance illumination and to control the imaging device to output image data corresponding to the reflectance illumination at each wavelength.