| http://www.w3.org/ns/prov#value | - mitting light from the site being observed to an infrared camera, an infrared camera, and a display for converting an image picked up by the infrared camera to a visible image and displaying the visible image; wherein the site being observed is a portion comprising the meibomian glands of an eyelid turned inside out, light from the light source is irradiated onto the site being observed, and light
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