FREE GROUND SHIPPING on all US web orders over $99! (excluding AK and HI)

215-884-8105 Toll-Free 1-800-659-2250 Fax 215-884-0418

Large ND (Neutral Density) Bar

Product Number: 15117

Purchase the Large ND (Neutral Density) Bar from Gulden Ophthalmics. This device includes six filters: 0.3, 0.6, 0.9, 1.2, 1.5, and 1.8 log unit optical density.  This larger version of our pocket ND bar has an extra large field of view.  Storage Pouch included.


The filter sizes on the Large ND bar are 1.5 inch (38mm) square. Sealed edges prevents dust from collection between the layers.  The ND Bar is used in conjunction with the “Swinging Flashlight” test to detect and quantify the extent of any afferent pupillary defect (APD).

The 0.3 ND filter is most useful for uncovering a borderline pupil defect. The six filters are rated as: 0.3, 0.6, 0.9, 1.2, 1.5, and 1.8 log unit optical density values. The product is 10 inches (25.4 cm) long and 2 inches (5.0 cm) wide.  It is made of high grade, optically clear plastic.  Comes in a pouch.

Do not use alcohol to clean this product!  Use only mild soap and water.