Color:Round Frame Applicable to red-green colorblindness HOW TO USE : (Assumes you are Red/Green deficient.) Purple and Blue wires, they look the same RIGHT? With these you can QUICKLY tell which one is Blue and which one is Purple. How? When you put these on the Blue wire turns Black and the Purple wire lightens up a bit. Wallah! For Brown and Green wires that look the same, put these on and the Green wire turns Black and the Brown wire becomes a little lighter. Done! It works the same with other colors that we see as almost the same. Obtain a bundle of different color wires and learn how to use these. Please test it by wearing it to check the traffic Red & Green light (Don't drive before you can see correct red and green light ).When first trying on the lens, the unusual appearance of colors may be visually distracting. Always maintain awareness of potential hazards in your surroundings and take appropriate cautions when engaging in activities such as driving or operation of machinery. The glasses are an optical assistive device; they are not a cure for color blindness. DO NOT endorse use of this product to pass occupational screening tests such as the Ishihara test. The lenses are designed for use with deuteranomalous or protanomalous color vision deficiency (which are types of partial or incomplete red-green color blindness comprising about 80% of known cases of CVD). The lens is not expected to assist with deuteranopia and protanopia (which are types of total or complete red-green color blindness comprising the remaining 20% of cases of CVD). Effectiveness of the lens may vary depending on the type and extent of color vision deficiency WHAT'S IN THE BOX 1 x Colorblindness Corrective Glasses 1 x Box
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