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Examination of the ocular fundus with monochromatic light.

Pure colored light in a narrow spectral band improves ophthalmoscopy and photography of the human ocular fundus. The contrast of fundus details is enhanced and the loss of quality of the image associated with chromatic aberrations is eliminated. The monochromatic technique also improves the localization of structures in the stratified layers of the fundus. Monochromatic photographs of a normal fundus and different pathologic cases are presented and discussed.