1.67 1.74 -8 to +8 Myopia Glasses Women Transparent Computer Eye Glasses Men Blue Light Blocking Eyeglasses Girls Fashion Clear Glasses

High-Concerned Chemical : None Element Type : Sweet Style Type : Square Place Of Origin : China (Mainland) Lens Width : 5Cm Lens Height : 4.5Cm Frame Material : Plastic Model Number : 20122104 Gender : Unisex Lenses Material : MR-174 Product Code: 101yj-taf Origin : Mainland China Certification : None A : Eyewear Accessories B : Anti Blue Light Blocking Eyeglasses C : Nearsighted Glasses D : Prescription Glasses F : Short-Sighted Glasses E : Reading Glasses W : Blue Light Glasses S : Anti-Blue Light Eyeglasses H : Glasses Blue Light J : Square Glasses For Women Product Category:Myopia Glasses Origin:Cn(Origin) Lens Material:Pc Frame Material:Metal Lens Height:4.5Cm Lens Width:5.Cm Weight:25G Gender:Unisex Degrees:0,-25,-75,-100,-125,-150,-175,-200,-225,-250,-275,-300,-350,-400,-450,-500,-550,-600 Function:Anti Blue Light Suitable For Face:Round Face Style:Full Frame Style:Polygon Frame Style:Vintage,Fashion

When choosing a refractive index, you can consider the following: 1. Degree selection: For low myopia (0-300 degrees), choose lenses with a refractive index of 1.56; for moderate myopia (300-600 degrees), consider a refractive index of 1.67; for high myopia (above 600 degrees), a refractive index of 1.74 is recommended. 2. Lens thickness: The higher the refractive index, the thinner the lens, which is suitable for users who want a thinner lens edge. 3. Imaging quality: The Abbe number of high-refractive index lenses is usually low, which may increase dispersion and affect imaging quality. Therefore, clarity and thinness need to be weighed when choosing. 4. Usage scenarios: If you do not wear glasses frequently, it may be more appropriate to choose lenses with a lower refractive index.

Please Confirm Before Purchase , Don'T Buy Mistakes!! "+" Means: Magnifying Glasses/Hyperopia/Prebyopia/Farsightedness , Most Use For 40-80 Years Old "-" Means: Myopia/Short-Short/Vision Miuns , Most Use For 0-40 Years Old "0" Means: The glasses have no prescription and are mostly used for decoration It is well known that when wearing glasses for the first time, the eyes need to readjust to the new optical correction, which may cause temporary visual discomfort, such as dizziness or headaches. Over time, the body adapts to the new vision state, and the discomfort will gradually lessen or disappear.

For Example : If You Need Presbyopia +2.5 , Please Purchase +250 If You Need Myopia -1.75 , Please Buy -175