The material of children’s glasses has an impact on the replacement frequency. Different frame and lens materials vary in terms of durability, adaptability, etc., as follows:
Frame material
Plastic material:
The advantages are that it is relatively light in weight, relatively low in price, has a variety of styles, and is quite popular among children. Moreover, some plastic frames have a certain degree of flexibility, are not prone to breakage, and can withstand a certain degree of bending.
The drawback is that its durability is relatively poor and it is prone to problems such as scratches and fading. If children use them improperly, such as frequently dropping their glasses or breaking them with their hands, plastic frames may wear out more quickly and thus need to be replaced in advance. Generally speaking, if well maintained, plastic spectacle frames can be used for 1 to 2 years. If not used properly, it may need to be replaced in about half a year.
Metal material:
The advantages are high strength, durability, resistance to deformation, and the ability to maintain a stable shape for a long time, providing good support for the lenses. Moreover, the metal frames have a good texture and look rather exquisite.
The drawback is that it is relatively heavy, which may put some pressure on children’s nose Bridges and may not be very comfortable to wear for a long time. In addition, if metal frames are hit by external forces, they may deform or get damaged. If children are lively and active, metal frames may also need to be replaced in advance due to accidental collisions. Under normal usage conditions, metal spectacle frames can be used for 2 to 3 years. However, if frequent collisions occur, it may need to be replaced every 1 to 2 years.
Titanium alloy material
The advantages are light weight, high strength, corrosion resistance and low susceptibility to allergies. It is a relatively ideal material for mirror frames. Titanium alloy frames not only ensure the comfort of wearing but also have good durability.
The drawback is that the price is relatively high. Due to its excellent performance and material properties, if properly maintained, titanium alloy frames can be used for 3 to 5 years or even longer, and the replacement frequency is relatively low.
Lens material
Glass lens
The advantages are excellent optical performance, high clarity, good wear resistance and the ability to provide a better visual effect.
The disadvantages are that it is relatively heavy, prone to breakage and has poor safety. For lively and active children, once the glass lenses break, it may cause harm to their eyes. Therefore, to ensure the safety of children, the replacement frequency of glass lenses may be relatively high. Generally, it is recommended to replace them every 1 to 2 years. Even if there is no obvious wear or damage, they will be replaced considering their safety.
Resin lenses
The advantages are light weight, good impact resistance, not easy to break and high safety. Moreover, resin lenses can undergo coating and other treatments to enhance their optical performance and wear resistance.
The drawback is that it is relatively prone to scratches and requires proper maintenance. If children do not pay attention to protecting the lenses and often touch them with their hands or rub them against rough surfaces, resin lenses may quickly develop many scratches, affecting the visual effect and thus need to be replaced in advance. Generally speaking, if resin lenses are well maintained, they can be used for 1 to 2 years. If there are many scratches, it may need to be replaced within a year.
PC lenses
The advantages are extremely high impact resistance, light weight, and very good safety, making it particularly suitable for children to use. Meanwhile, PC lenses also have good UV protection performance.
The drawback is that its hardness is relatively low, it is prone to scratches, and its optical performance is slightly inferior to that of glass lenses and high-quality resin lenses. Under normal usage conditions, PC lenses can be used for 1 to 2 years. However, if the surface of the lenses is severely scratched, they also need to be replaced in a timely manner.
Post time: Apr-19-2025