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1: Introduction to the online opticianry process a: Provide data Provide the power of the left and right eyes, the interpupillary distance, if there is astigmatism, the power and axial position of the astigmatism should be provided. b: choose lens A variety of styles and materials, different prices, different refractive index lenses for you to choose. c: choose glasses frame d: Choose the glasses and lenses you need, add them to the shopping cart and take the payment e: Contact customer service and provide remarks about your optician data 2: Online optician data provision A: no astigmatism: ----left and right eye power + interpupillary distance B: Yes Astigmatism: ---power of left and right eye + power of left and right eye astigmatism+ axis of astigmatism + interpupillary distance O1: METHOD ONE Go to a regular eyeglass hospital for testing 02:METHOD TWO Go to the offline physical store to check the optometrist for you 03: METHOD THREE historical optometry data within two years can be used without deepening In order to make out a perfect frame to fit for your face, we need to know your measurement and PD, please inform us the following: 1.Diopter: left = (-2.00), right = (-2.00) ------- this is an example for your reference. If you have the prescription report as below, pls send us photo. Interpupillary distance measurement Interpupillary distance refers to the distance between the center points of the pupils of the two eyes. If you only know your nearsightedness, if you do not know the interpupillary distance, you can measure it in the following way step: 01: Prepare a ruler accurate to millimeters 02: The measurer and the measured person are directly facing each other, and the distance between the face to face is about 30cm, and the measured person is looking squarely with the glasses Ahead 03: Align the zero scale of the ruler with the center distance of the pupil of the right eye of the subject 04: It is more accurate to take the average of repeated measurements multiple times 3: Select the frame How to choose the right frame: pay attention to the following 3 points 01: The smaller the height and width of the lens in the frame, the thinner the lens is relatively Recommendation: Lens height Lens width ≤52mm 02: Large faces choose glasses with larger frames Sestion: Male frame outer width ≥140mm female frame outer width ≥138mm 03: Metal allergy, optional sheet/TR90/pure titanium frame 4: Select lens How to choose the right lens Pay attention to the following 3 points 01: The lower the power, the thinner the lens Recommendation: The higher the myopia degree, the thicker the lens, and the height should be as high as possible 02: The higher the refractive index of the lens, the thinner the lens is relatively Recommendation: the same number, the higher the refractive index, the thinner the lens 03: The smaller the height and width of the lens in the frame, the thinner the lens is Sestion; choose a lens with a high refractive index as far as possible when choosing a large frame 5: Frequently Asked Questions Ask:The lens that comes out is a bit thick? Answer: The factors that affect the thickness of the lens are related to the following four points a. Power: The higher the power, the thicker the lens. b. Lens: The lower the refractive index of the lens, the thicker the lens c. Frame size: The middle of the lens is thinner and both sides are thick. The larger the frame, the thicker the lens. d. The difference between the building distance and the frame: the greater the difference between the interpupillary distance and the frame. The more the lens shifts, the thicker the lens. Ask: Is the matched lens slightly uncomfortable to wear? Answer: The following are the conditions that may occur when the new lens is first worn. Is the general adaptation period of 7 days, such asIf you still feel unwell after 7 days, please contact us in time a. The number of new glasses has been changed compared with the old glasses, dizziness, eye swelling and soreness appear when they are first worn. b. The old glasses are deformed and worn, and the daily cut-off time is too long. You may be uncomfortable just wearing the new glasses c. Wearing independent, wearing one-piece nose support frame, due to the change of lens distance, slight discomfort will occur. Ask: How to choose the refractive index of the lens according to the power? Answer: 0-300°recommended refractive index 1.56 lenses, within 400°recommendation 1.61 lenses, 300-700°recommendation 1.67 lenses, and higher than 500°recommendation 1.74 refractive index lenses 1.56 Index Photochromic Lenses: (Anit-Radiation and Anti-Scratch Transit Grey Or Brwon Color For Choose) (SPH: 0 ~ -6.00;CYL: -0.50 ~ -2.00) BASE TRANSITION LENSES Remark:Prescription lenses under one of below two conditions belongs to customized lenses, lenses factory has to make the lenses specially for you, they will ask for extra cost USD10. Thanks for your great understanding 1)Sphere -6.00 2)Cylinder -2.00 If you are more than the scope of the prescription, please contact me to modify the price Ask: Can the optician be returned or exchanged? Answer: The processed lens is a private customized product, and the matched lens cannot be sold again. The return and exchange of nonquality problems and mismatched powers are not supported Please forgive me Photochromic Sunglasses CR-39 Resin Prescription Aspheric Glasses Myopia Hyperopia 1.56 1.61 1.67 1.74 Optical Lens Transition Grey Brown Blue Red Lenses Hardened wear-resistant and anti-radiation -->