Set of 9 discs each made of 18.5″ Diameter and 0.040″ thin PVC material. Made in the USA. Bernell will try to keep a set on hand at all times, however please allow 3-4 weeks for delivery.
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Set of 9 discs each made of 18.5″ Diameter and 0.040″ thin PVC material. Made in the USA. Bernell will try to keep a set on hand at all times, however please allow 3-4 weeks for delivery.
Set of 9 discs each made of 18.5″ Diameter and 0.040″ thin PVC material. Made in the USA. Bernell will try to keep a set on hand at all times, however please allow 3-4 weeks for delivery.
| Brands | Bernell USA |
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Aperture Rule™ Trainer Kit is a standard instrument in most VT programs. Features progressive fixed demand. Polarized or colored lenses are not required. Helps improve low fusional and accommodative reserves, poor stereopsis, Fixation disparity suppression & tight accommodation-conversion relationship.

Stereoacuity depth preception test designed to rapidly test for amblyopia and strabismus in early and non-readers and non-verbal children and adults.
The Prism Bar Holder Kit combines a prism bar holder with two horizontal prism bars. The handle holds two horizontal prism bars side by side to get a quick estimation of a prism prescription.
The prism bar set includes the holder along with 2 horizontal prism bars. The prism bar holder can be purchased by itself.
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