Slit-lamp biomicroscopy

Definition of slit-lamp biomicroscopy
National Cancer Institute

slit-lamp biomicroscopy

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An eye exam using an instrument that combines a low-power microscope with a light source that makes a narrow beam of light. The instrument may be used to examine the retina, optic nerve, and other parts of the eye. Also called slit-lamp eye exam.

Source: NCI Dictionary of Cancer Terms