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To remove a foreign body from the cornea with dexterity and without undue injury, particularly where the object is small, and difficult to see, one often requires three hands, one hand to hold the lids, another for the eye spud, and a third to condense the light on the eye. Every physician knows how difficult and awkward it is to hold a patient's lids and with the same hand try to condense the light on the cornea.
With the end in view of rendering this common operation easy of performance, I devised an instrument which does away with the need of an extra hand to condense the light on the cornea. Briefly, this is an instrument which combines the spud and light, consisting, as originally devised, of a handle about five inches in length, through which run the wires to a tiny incandescent condensing lamp at its end. A short
CARSON RL. AN ILLUMINATED EYE SPUD AND KNIFE NEEDLE. JAMA. 1908;L(19):1523. doi:10.1001/jama.1908.25310450033002a
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