Polycarbonate vs High Index: What Are the Differences?
Here, we will briefly show some differences between polycarbonate lenses and high index lenses. If you are looking for thinner and lighter lenses, high index lenses would be a good choice. High index lenses are strongly recommended for those people who require a strong eyeglasses prescription for common vision problems, such as nearsightedness, farsightedness, or astigmatism. Besides, you need to know that the stronger prescription, the thicker the edges of the lenses. So, high index lenses are good choices because they are slimmer and lightweight.
Polycarbonate lenses are an ideal option for children’s eyewear since they are tough, lightweight, tough, and durable. Because of their durability, polycarbonate lenses are much less likely to break or fracture than even high index lenses.
So, from the above information, you can know the differences between polycarbonate and high index lenses. With these differences, you have known how to choose the lenses when prescribing a new pair of eyeglasses.
If you want to get a pair of new eyeglasses, you can choose to go to the local optical store. However, nowadays, you can choose to prescribe glasses online. This gives you great convenience. If you want to get a pair of new glasses online, Koalaeye Optical may be a good choice for you, which is a professional optical online store, providing all kinds of glasses or sunglasses, such as blue light blocking glasses, progressive lenses, driving glasses, and so on. In addition, Koalaeye Optical provides a free shipping service.
Flexson glasses are more durable, lighter, and wear-resistant than traditional metals, allowing wearers to confidently meet every challenge without hesitation. The Flexson frame requires minimal adjustments.
The nose pad and end piece can be fine-tuned. Advanced memory metals are used in the bridges and/or temples, allowing them to bend or twist and return to their original shape. With years of design and construction experience, Flexson Glasses has evolved into an unlimited range. Memory metal is combined with rubber, TR90, and stainless steel to create a diverse range full of color, premium durability, lightweight construction, and comfort.
Frame Selection of Progressive Sunglasses
Choose a proper frame range. Only if the frame is not very large and beveled, the frame can be very flat. Because the distance from the glazed to the optical center of a progressive multi-focus lens is 19-17 mm, and the distance between the edges of the frame will be no less than 28 mm if the area inside the lens can be used at close range while maintaining the far sighting field.
Choose clear glasses for kids to keep safe.
Safety is very important no matter in what aspect, glasses are no exception. Especially for children, they are more active. The lens is best made of PC, and the frame is best made of materials with high toughness, such as TR90. Service fixed number of years of this kind of picture frame is long.
Why are eyeglass frames are so expensive?
The industrial chain has factories, brand owners, regional general agents, retailers. Each link needs to share the risk and profit. They have high operating costs. In addition to the well-known rent, they have the costs of labor, decoration, and so on. There is another important reason. It is the inventory loss because of the style problems. This aspect of the cost must be amortized. From the structure and appearance design of the glasses frame, the development and application of raw materials, processing technology, to manufacturing equipment and procedures, the actual cost may be much higher.
Understand blue light correctly.
Blue light has been shown to affect the body's circadian rhythms, with too much exposure to it late at night from gadgets such as mobile phones disrupting a person's ability to fall asleep. Therefore, it is recommended that people limit screen time two to three hours before bedtime and set their devices to night mode to reduce glare, relieve eye fatigue and minimize blue light at night. However, as we learn more about blue light, not all of it is bad for us. Blue light has been found to play an important role in maintaining health, such as regulating the secretion of hormones in living organisms. Blue light helps prevent reduced night vision and has been shown to benefit refractive development in adolescents and minors.
Are progressive lenses good for driving?
Progressive lenses can help you see close, far, and anywhere in between. That means progressive lenses are good for driving. So you don't have to change your glasses on the way. With progressive lenses, you can easily see all distances. Standard lenses are more affordable than premium lenses, but premium lenses offer a wider field of view and are ideal for drivers.