Medical Definition of Focal illumination

1. Illumination in which a beam of light is directed diagonally to an object so that it is brilliantly illuminated while the surrounding area is in shadow. Synonym: lateral illumination, oblique illumination. Kohler illumination, a method of illumination of microscopic objects in which the image of the light source is focused on the substage condenser diaphragm and the diaphragm of the light source is focused in the same plane with the object to be observed; maximises both the brightness and uniformity of the illuminated field. (05 Mar 2000)

Lexicographical Neighbors of Focal Illumination

focal adhesion
focal amyloidosis
focal and segmental hyalinosis
focal appendicitis
focal condensing osteitis
focal depth
focal depths
focal dermal hypoplasia
focal distance
focal embolic glomerulonephritis
focal epilepsy
focal epithelial hyperplasia
focal gallbladder wall thickening
focal gigantism
focal glomerulonephritis
focal illumination (current term)
focal infection
focal interval
focal length
focal lengths
focal lymphocytic thyroiditis
focal metastatic disease
focal motor seizure
focal necrosis
focal nephritis
focal nodular hyperplasia
focal plane
focal point
focal points
focal ratio

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