How to choose lens functions? ① Photo Brown/Photo Grey: Lenses do not have anti-blue light function, but have anti-reflection function. Lenses will darken in sunlight, turning brown and gray (changing color with the intensity of ultraviolet light). ② Anti Blue Ray+Photo Brown/Anti Blue Ray+Photo Grey: Lenses have anti-blue light function and anti-reflection function. Lenses will darken in sunlight, turning brown and gray (changing color with UV intensity). ③ None: This lens only has anti-reflection function, make prescription glasses according to the prescription. ④ Anti Blue Ray: The lenses have anti-blue light and anti-reflection functions, which are our most commonly used prescription glasses. If your astigmatism is over ±2.00 diopters, please provide a photo of your optical prescription following the format for Right(OD) and Left(OS) SPH, CYL, AXIS, ADD, PD.

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