KINGSEVEN Trendy Driving Optical Lens Sunglasses Prescription Myopia Hyperopia Progressive Glasses Men Women Classical Eyewear
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Product specifications
Detailed product description
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- Brand: KINGSEVEN
- Sales: 2
- Package size: 18 × 10 × 10 cm
- Package weight: 0.15 kg
- Rating: 0.0 / 5
Before adding to cart, choose an available option and check the quantity.
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!!!
How to purchase Prescription Glasses?
Step 1: How to choose between Single Version and Progressive
(The numbers filled in the table are just taken as an example.)
Step 2: How to choose the Lens Index is Best For You
(The higher the refractive index of the lens, the thinner the lens, and the more comfortable it is to wear)
Step 3: How to choose Lens Functions
The lens has anti blue light function and will darken in sunlight, turning brown/gray (changing color with changes in UV intensity)
The lenses are colored and default to black lenses. Polarized lenses have functions such as Glare Reduction, Enhanced Visual Clarity, UV Protection, Color Enhancement, Reduction of Eye Strain, etc.They are prescription sunglasses. We have the following colors to choose from.
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.
Common causes of discomfort
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.