This bar in an assembly of optical filters of progressive densities providing a graduated system of dissociation. Very useful to reinforce weak fusional status. A holding handle is integral. Neutral Density Bars are used to measure Afferent Pupillary Defects (APD), also termed “diminished pupil reaction to light levels”. The log units quantify how much light is transmitted as: 41, 12, 5. Supplied in neat wallet.
Neutral Density Filter Bar
| Stock Code | Description | Price | ||
|---|---|---|---|---|
| 1549150 | Neutral Density Filter Bar supplied in wallet | £111.00 | Place Enquiry |
