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The apparatus consists of a handle, H, with a push switch, C, which lights both bulbs. Two bars, B and B, are mounted on the end of the handle at right angles.
Fig. 1.—The transilluminator in use.
Two light carriers fit on the bars in such a way that they can be separated, as shown in figure 1 A, or brought together, as shown in figure 1 B. The lamps are under the metal caps, A and A, which are removable. When the transilluminator is used for examination of the maxillary antrums, a glass shield, G, is slipped over the lights. T indicates the cord tips for connecting the apparatus to a battery or current controller.
The instrument possesses the following features:
1. It permits simultaneous transillumination of both frontal sinuses or both ocular globes.
2. When one lamp is placed under each pupil the ophthalmologist is able to compare
SCHWARTZ LH. A TRANSILLUMINATOR FOR THE EYES AND THE ACCESSORY NASAL SINUSES. Arch Otolaryngol. 1936;23(5):593–594. doi:10.1001/archotol.1936.00640040603009
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