NEUTRAL DENSITY BAR

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LARGE FRAME

Neutral Density Bars are used to measure Afferent Pupillary Defects (APD) also called 'diminished pupil reaction to light levels'. The log units quantify how much light is transmitted as: 41%, 22%, 12%, 7%, 5%, and 3%.

The NEW Richmond Products Neutral Density Bar (P/N 4702) provides twice the frame size for easier exams. It provides the same filter values: 0.3, 0.6, 0.9, 1.2, 1.5, 1.8 Density Log Units. The larger frame size was requested by several Neuro Ophthalmologists. The overall bar is 10" by 1 ½" (253mm by 38mm). Each frame is 1 ½" (38mm) square. This unit employs solid color blocks to prevent any dust from collecting between the layers. It comes with a handle for easy use and hole for storage.

4702R   Neutral Density Filter Bar - Large Frame (1 lb) .......... $100.00

4888    Slider adds 1.8 density to filter bar .................................. $20.00

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