fundus camera

camera, fundus

A camera attached to an indirect ophthalmoscope aimed at photographing the image of the fundus of the eye. This image is produced by the objective of the ophthalmoscope at the first focal point of the objective of the viewing microscope (and of the camera), which forms an image on the film. A flip mirror within the optical path of the viewing microscope allows the observer to view the image of the fundus and focus it, thus ensuring that the image being photographed is as clear as that being viewed. Fundus cameras usually require a dilated pupil of about 4 mm and their fields of view extend up to 45º. They provide an objective photographic record of any condition in the fundus. They can also be used to take photographs of the anterior segment of the eye. See ocular fundus; indirect ophthalmoscope; scanning laser ophthalmoscope.

单词	fundus camera
释义	DictionarySeefundus fundus camera camera, fundus A camera attached to an indirect ophthalmoscope aimed at photographing the image of the fundus of the eye. This image is produced by the objective of the ophthalmoscope at the first focal point of the objective of the viewing microscope (and of the camera), which forms an image on the film. A flip mirror within the optical path of the viewing microscope allows the observer to view the image of the fundus and focus it, thus ensuring that the image being photographed is as clear as that being viewed. Fundus cameras usually require a dilated pupil of about 4 mm and their fields of view extend up to 45º. They provide an objective photographic record of any condition in the fundus. They can also be used to take photographs of the anterior segment of the eye. See ocular fundus; indirect ophthalmoscope; scanning laser ophthalmoscope.
随便看	put someone in their place put (someone) in the picture put someone in the picture put someone in the picture, to put someone in the shade put someone in the way of put someone into power put someone into the doghouse put someone into the doldrums put someone into the gutter put someone next to put someone off put someone off his or her stride put someone off something put someone off their stride put someone off their stroke put someone off the scent put someone on put someone on a diet put someone on a pedestal put someone on blast put someone on guard put someone on his or her guard put someone on his or her honor put someone on his or her honour