Features1Can effectively block harmful blue light, give you comfortable and better visual experience. 2Comfortable and humanized nose rest is designed according to the shape of the human face and effectively resist fatigue. 3Metal wrapped hinges are strong and durable, provide greater durability, special designed for the elderly wearing. 4Automatically adjustment for comfortable wearing, blue light blocking eyeglasses lens better care for your eyes. 5Blue light blocking eyeglasses lens, reasonable design and excellent performance, suitable for most face shapes.SpecificationItem Type: Blue Light Blocking GlassesMaterial: Metal + Blue Light Blocking LensApplicable Gender: UnisexApplicable Population: The elderlyColor: Frosted Black FrameGenerally, symptoms of presbyopia will appear after the age of 45, usually according to the following reference table:Age (Years Old)Recommended Degrees45-49+10050-54+15055-59+20060-64+25065-69+30070-74+350Above 75+400Note: The above degrees are for reference only, due to the degree of presbyopia varies.Package List1 x Reading Glasses 1 x Storage Box