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Trial Rings are standard size to be used in trial frames
Great diagnostic tool to help patients quickly compare tints.
Array of NoIR Medical Filters and Chadwick exclusive Filters on a Key Ring.
Chadwick Colors include 3 shades of FL-41, 3 shades of E-Blue, COI Plum, and COI 507
Each lens is laser engraved with tint description and light transmittance.
Contains popular colors from VA Polytrauma Centers, as well as filters recommended by NORA