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Available Negative Strength(s):-1.00,-1.50,-2.00,-2.50,-3.00,-3.50,-4.00Photochromic lens optical glass containing silver halide microcrystals, phototropy reversible reaction according to the principle, in the sunlight and UV irradiation variable dark, completely absorb ultraviolet and visible light absorption of neutral; back to the dark, can restore the colorless transparent.
Negative Strength Eyeglasses for Far Seeing ( NOT READING GLASSES)
Product Size, Lens Width: 54mm, Lens Height: 33mm, Bridge: 17mm, Temple Length: 142mm
Delivery within 10-14days, if delivery is extended or product issues,Please contact us ,Usually, you will get reply in 24 hours.Thanks