| 摘要 |
Retinal metabolism is analysed over at least a portion of a cardiac cycle by first illuminating a portion of a retina of an eye 10 with light of a first wavelength from source 21 and producing a first image. The portion of the retina is subsequently illuminated with light of a second wavelength from source 22, the first and second wavelengths being selected such that absorptivity of light of the first wavelength by oxygenated blood is greater than absorptivity of light of the second wavelength and the absorptivity of light of the first wavelength by deoxygenated blood is less than absorptivity of light of the second wavelength, to produce a second image. The first and second images are processed by processor 150 to map relative oxygenation of the portion of the retina as an indication of retinal metabolic function of the portion of the retina. The procedure is repeated over at least a portion of a cardiac cycle to analyse metabolic function changes of the portion of the retina within the at least a portion of a cardiac cycle. Also disclosed is a retinal function camera 200. The retina may be stimulated by an optical stimulus light source 40. |
