Purchase the Red & Green Metal Frame Glasses. The glasses are designed for adult patients and are reversible so they can be worn with the green or red lens on the right or left eye. Works well with multiple red/green tests.
The red and green colors were selected with careful consideration of hue and tint. The filters are 100% accurate in the cancellation of The Worth 4 Dot, The Three Character Test, The Lancaster Red-Green Tests, and The Hess Screen Tests colors.