Slit lamp

An apparatus for projecting a narrow flat beam of intense light into the eye. Slit lamp one embodying a diaphragm containing a slitlike opening, by means of which a narrow, flat beam of intense light may be projected into the eye. It gives intense illumination so that microscopic study may be made of the conjunctiva, cornea, iris, lens, and vitreous, the special feature being that it illuminates a section through the substance of these structures.Examiner using hand-held slit lamp. (Photography by Leslie MacKeen.) From Stein et al., 2000.sun lamp (ultraviolet lamp) an electric light that transmits ultraviolet rays; used as a therapeutic device and as a means of obtaining an artificial suntan.

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