How much does it cost to change the frames?
The price of changing a glasses frame is very different, from tens of yuan to thousands of yuan, mainly to see the quality of the glasses, material, and so on. Still, you should think about: the use of fixed a number of years of glasses if the glasses have wear and tear if it is worth to change.
Benefits of Progressive Lenses
The lens looks like a single vision lens, with no dividing line between degrees. Not only is it beautiful in appearance, but more importantly, it protects the privacy of the wearer's age (for the wearer of reading glasses). There is no need to worry about showing the secret of the wearer's age by wearing the glasses. Because the degree is gradual, the replacement of the adjustment effect is increased step by step according to the shortening of the close distance. There is no adjustment fluctuation, which is not easy to cause visual fatigue. Clear vision can be achieved at all distances in the visual scope.
The lifetime of contact lens
Traditional type: the replacement cycle is more than 3 months, not more than 1 year, that is, we say we abandon after one season, and we can abandon after half a year and a year.
Frequent-change type: the replacement cycle is more than 2 weeks, not more than 3 months, that is, we often say that we throw them after 1 month or two weeks.
Abandoned type: as a one-time use, common for the day use.
Contact lenses, like food, have an expiration date. For example, the shelf life of daily contact lenses is one day (after it is opened), and can not exceed this time. And the life span of a pair of glasses depends on how long you use them each day. Although different lens materials determine different wear times, we recommend that soft lenses should not be worn for more than 8 hours per day (do not wear soft contact lenses to sleep). Traditional contact lenses can be used for a long time, so the lens is easy to produce protein-lipid deposition, and then they are easy to cause eye surface inflammation and hypoxia reaction. If conditions permit, it is recommended to choose the frequent-change type and discard type, the shorter the cycle, the healthier.
What are the benefits of the TR-90?
Impact resistance is more than 2 times of nylon material, in order to effectively prevent the damage to the eyes caused by impact in the movement. It has high-temperature resistance. It's very elastic, and it doesn't deform.The use of thermoplastic materials in these frames provides pretty strength due to their flexible characteristics. It is not easy to deform and change color, making it wear for a longer time. Having no release of chemical residues, it is in line with the European requirements for food-grade materials. The weight is less than half of the weight of the plate frame, 85% of nylon material, reducing the burden of nose bridge, ears, and making wearing more comfortable.
Pure titanium has special current characteristics
Pure titanium can guide electron fluctuations to produce ions, causing the current to tend to ionize. The positive and negative ions can adjust the adverse effects of electromagnetic waves caused by the body's biological current disorder and have a great health care effect on the human body in order to avoid fatigue, muscle stiffness, soreness, and other symptoms or problems.
Glasses are used as accessories.
Glasses can be used to outline your face. Most glasses have a positive effect on the temperament and image of the person, provided that the choice is proper. The function of the spectacle frame, in addition to its supporting the lens to form glasses to wear on the eyes of the people to play a support role, also has a beautiful, decorative role. Modern fashionable person emphasizes glasses should have harmony with the facial makeup and dress of person, reflecting social class, high learning, elegant fashion, and so on. When the spectacle frame is worn by people in the streets and alleyways, those who are not nearsighted begin to pay attention and feel that wearing a chic spectacle frame is a very fashionable behavior.
Pure titanium glasses
Pure titanium refers to a silver-white transition metal material with a titanium purity of more than 89%. The application of pure titanium as a chemical element to spectacle frames is undoubtedly an improvement and sublimation of spectacle materials. Pure titanium has many disadvantages such as high melting point, lightweight, strong corrosion resistance, metallic luster, firm electroplating layer. Also, titanium metal has beneficial physiological effects on the human body. It is an ecological trace element that is non-toxic and non-radiation to the human body. It has the effects of promoting blood circulation, lowering blood pressure, and relieving stress.