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Acta Ophthalmol Scand. 1999 Oct;77(5):526-9.

Resolution of retinal digital colour images.

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Eye Clinic, Rigshospitalet, Copenhagen University, Denmark.


Several digital colour cameras commercially available were fitted on a fundus camera. A test target placed in an artificial eye was used for measurements of the resolution of the resulting digital images and compared to film material. The maximal target resolution of the fundus camera was 6 microm corresponding to 24 microm at the image plane. The best film material matched this closely. To avoid aliasing, the size of the digital image must be 2-3000 pixels to match this resolution. This criterium is fulfilled by present high-end digital cameras. Further development of hardware and software is needed for their introduction into clinical settings.

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