Neutral Density Bar mit Etui und Griff

The Neutral Density Filter Bar allows to easily measure

afferent pupillary defects (APD) also called “diminished

pupil reaction to light levels”. Provides the filter values:

0.3, 0.6, 0.9, 1.2, 1.5, 1.8 Density Log Units. Each filter

is 1.5″ (38 mm) square with an overall bar size of 10″

by 1.5″ (25.3 cm by 3.8 cm). Comes with a handle for

easy use and a case for storage.