Apparatus for measuring the autofluorescence of the cornea of an eye
AssigneeLeiden University Medical Center
InventorsJasper Anton van Best, Franco Docchio
Life of this patent
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Abstract
For the early detection of blindness-causing diabetic retinopathy, an apparatus for measuring the autofluorescence of the cornea of an eye, comprising means for tangentially illuminating the cornea, means for receiving the autofluorescent radiation generated in the cornea by this illumination, and means for processing the measured autofluorescent radiation, wherein the means for tangentially illuminating the cornea comprises at least one light source which radiates blue light and at least one filter which transmits at least a part of the blue light in a light path to the cornea, and the means for receiving the autofluorescent radiation generated in the cornea comprises at least one filter which transmits green light.
Claims12
An apparatus for measuring the autofluorescence of the of the cornea of an eye, comprising means for substantially tangentially illuminating the cornea, means for receiving the autofluorescent radiation generated in the cornea by this illumination, and means for processing the measured autofluorescent radiation, wherein the means for tangentially illuminating the cornea comprise at least one light source which radiates blue light and at least one filter which transmits at least a part of the blue light in a light path to the cornea, the means for receiving the autofluorescent radiation generated in the cornea comprise at least one filter which transmits green light, the apparatus further comprises a light source for causing the pupil to contract, as well as switching means for switching on, in succession, the blue light source for a first predetermined period, and then the light source for causing the pupil to contract for a second predetermined period, and for repeating this cycle a number of times.
Dependencies are inferred from the claim text.