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Kind reminder: It is recommended to inform customer service of the prescription information in the form of text or pictures after ordering, so as to ensure that the prescription filled in the order is consistent with your prescription!!! Right(OD) SHP: CYL: AXIS : Left(OS) SHP: CYL: AXIS : ADD: PD: The following situations may require additional price differences ① When the absolute value of your prescription CYL is greater than 2, you only need to enter (± 2), then enter your prescription information normally and submit the order for payment. If the absolute value of CYL is greater than 2, you need to pay a price difference of $10. ② When your pupil distance is less than 67mm, you will need to pay an additional $10 ③ Hyperopia (reading glasses):If your prescription contains a "+" number, you will need to pay a difference of $10; The above situation requires a price difference. After receiving your order, customer service will contact you to make up the difference. We hope you can cooperate, or you can pay the $10 link below. Thank you all and have a wonderful day. 10$ Link:https://www.aliexpress.com/item/2255800824985764.html?gatewayAdapt=4itemAdapt How to purchase prescription glasses? 1. How to choose between single version and progressive version? ① When you need to see far and near for use, and there is ADD data in the prescription, please select the progressive version and enter detailed prescription information. ② If you only need to see far or near for use, please select the single version and enter detailed prescription information. ③ When you are unable to input detailed prescription information, please do not worry. Please purchase the correct and suitable prescription glasses according to these points, and then inform customer service of the prescription information in the form of text or pictures. This way, customer service will also note the prescription information to the optometrist to make the correct prescription glasses for you. 2. How to choose the refractive index of lenses (1.56/1.61/1.67/1.74) (The higher the refractive index of lenses, the thinner they are, and the more comfortable they are to wear) ① If the sum of your SPH and CYL numbers is less than 300 degrees, it is generally recommended to choose lenses with a refractive index of 1.56. Of course, lenses with a refractive index of 1.61/1.67 are also suitable, as they will be thinner and more comfortable to wear. ② If the sum of your SPH and CYL numbers is greater than 300 and less than 500 degrees, generally choose 1.61 lenses. Of course, 1.67/1.74 lenses are also suitable as they will be thinner and more comfortable to wear. ③ If the sum of your SPH and CYL numbers is greater than 500 and less than 800 degrees, generally choose 1.67 lenses. Of course, 1.74 lenses are also suitable as they will be thinner and more comfortable to wear. ④ If the sum of your SPH and CYL numbers is greater than 800 degrees, a lens of 1.74 is generally chosen. 3. 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). Relatively ①, it is more recommended to choose ② ③ Polarized/Color Tint: The lenses are colored and default to black gray lenses. They are prescription sunglasses. If you need sunglasses with lenses of other colors, please contact customer service to choose the color you prefer. ④ None: This lens only has anti reflection function, make prescription glasses according to the prescription ⑤ Anti Blue Ray: The lenses have anti blue light and anti reflection functions, which are our most commonly used prescription glasses I hope these are helpful to you. If you have any other questions, please contact customer service. Wishing you a wonderful day. Standard Acrylic aspheric Air Lens Our 1.56 index thin, Lightweight, and impact-resistant CR-39 lens is up to 17% thinner than industry standard. Plus its: ●Scratch Resistant ●UV Protective ●Aspheric ●Thin ●Anti reflection Aspheric Lenses suggestion power: Myopia- - ---- - SPH: -0.00~-3.00; CYL: -0.00~-2.00 Hyperopia---SPH: +0.25~+3.00; CYL:+0.00~+2.00 (ADD 10$) Cylinder------CYL: +2.00~+4.00 or CYL:-2.00~-4.00 (ADD 10$) Standard MR-8 aspheric Lens Our 1.61 index thin, Lightweight, and impact-resistant CR-39 lens is up to 26% thinner than industry standard. Plus its: ●Scratch Resistant ●UV Protective ●Aspheric ●Thin an light ●Anti reflection Aspheric Lenses suggestion power: Myopia- - ---- - SPH: -0.00~-6.00; CYL: -0.00~-2.00 Hyperopia---SPH: +4.00~+6.00; CYL:+0.00~+2.00 (ADD 10$) Cylinder------CYL: +2.00~+4.00 or CYL:-2.00~-4.00 (ADD 10$) Standard MR-7 aspheric Lens Our 1.67 index thin, Lightweight, and impact-resistant CR-39 lens is up to 40% thinner than industry standard. Plus its: ●Scratch Resistant ●UV Protective ●Aspheric ●Ultar thin ●Anti reflection Aspheric Lenses suggestion power: Myopia- - ---- - SPH: -0.00~-8.00; CYL: -0.00~-2.00 Hyperopia---SPH: +4.00~+8.00; CYL:+0.00~+2.00 (ADD 10$) Cylinder------CYL: +2.00~+4.00 or CYL:-2.00~-4.00 (ADD 10$) Standard ultrathin ACR Air Lens Our 1.74 index thin, Lightweight, and impact-resistant CR-39 lens is up to 60% thinner than industry standard. Plus its: ●Scratch Resistant ●UV Protective ●Aspheric ●The thinnest ●Anti reflection Aspheric Lenses suggestion power: Myopia- - ---- - SPH: -0.00~-12.00; CYL: -0.00~-2.00 Cylinder------CYL: +2.00~+4.00 or CYL:-2.00~-4.00 (ADD 10$) Aspheric Lenses undistorted edge, see the thing as real ●Thinner ●Lighter ●Flatter Spheric Lenses distorted edge, distortion Difference between Spherical Lens and Aspherical Lens Generally speaking, spherical lens are thick and the image through the lens will be distorted. aspherical lens are thinner, lighter and more comfortable for wearers. Aspherical lens have wide vision and the image through the lens is more real and natural. Wearers will not feel tired after wearing aspherical lens for a long time. Anti-blue Lenses : Ordinary lens Blue Reflect Lens DIGITAL SCREEN PROTECTION Help protect your eyes while using devices such as phones,computers,and tablets provide Lenses: 1.56 Anti-Blue 1.61 Anti-Blue 1.67 Anti-Blue 1.74 Anti-Blue Photochromic Lenses:Photo Brown/Anti Blue Ray + Photo Brown/Photo Grey/Anti Blue Ray + Photo Grey indoor Low light Glare LIGHT ADJUSTING (Provide Lenses:1.56 Photochromic 1.61 Photochromic 1.67 Photochromic) Lenses that darken when exposed to outside light and remain clear inside Optometry Data Explaination : Explaination: 1.OD-RIGHT = Right Eye OS-Left = Left Eye 2.Sphere (SPH)=Spherical, is the strength of our prescription,"+"refers to farsightedness and presbyopia, "-"refers to nearsightedness. If "PL" or "Plano" is stated at the place of SPH on your prescription, please enter 0.00 for this option. 3.Cylinder (CYL) = Cylindrical, is the diopters degree of the astigmatism. This number also has "+" or "-" signs. If "DS"or "SPH" or "spherical" or "PL" is stated at the place of CYL, it means you have no astigmatism and 0.00 is the option required to choose. 4.AXIS, is a number between 0 and 180 degrees, and means the orientation of your astigmatism. There is no sign before this number. 5.PD-PUPILLARY DISTANCE = Pupillary Distance PD (OU), written as "64", means the Binocular PD which is for both eyes. PD (OD), means the Monocular PD for the right eye, PD (OS), means the Monocular PD for the left eye. Please do check frame size The ruler in the picture cannot be used to measure your old glasses. Please use your measuring tool to check the size of old pair of glasses.(2-3mm difference acceptable) Thickness of the lenses depends on a few factors: 1. Prescription strength. The stronger the prescription, the thicker the lens, all else being equal. 2. Frame selection/fit. All else being equal, the larger the size of the lens, the thicker it gets (thickness proportional to size). 3. The higher the index of refraction, the less of a material is necessary to bend, or focus, the light in the same way for the same prescription. So, higher index material lenses will also reduce thickness and "Coke bottle" effect. Helps for common discomforts 1. New glasses 2. New Prescription 3. The change of frame shape may cause discomfort. 4. Discomfort caused by discordance of prescription and lens index. 5. Discomfort caused by the spherical lens. First time to try progressive Lenses. It is of great importance to learn how to use progressive glasses and may take several weeks to get used to. If you still feel uncomfortable after several weeks, you could change to bifocal glasses or single vision for reading/distance.