What number bulb is used in a non-contact tonometer?

Prepare for the JCAT Independent Practice Exam! Study with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

In a non-contact tonometer, the number that corresponds to the bulb used is 12419. This specific bulb is utilized because of its compatibility with the design and function of the tonometer, which requires a particular light source to project a beam for measuring intraocular pressure without direct contact with the eye. The 12419 bulb emits the appropriate wavelength and intensity of light needed for accurate readings in this non-invasive procedure. Other bulb numbers listed do not serve this purpose, as they may differ in spectral output, size, or filament design, which affects their suitability for the tonometer's operation.

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