1, depending on the weight
If you want to match a pair of comfortable frames, lightness is the first rule. The smaller the frame, the less parts of the lens need to be kept, and the lighter the glasses are. If the degree is high, you can choose a smaller frame to reduce the weight of the glasses.
Generally speaking, frames made of tungsten carbon and pure titanium are relatively light. Lenses can also affect the weight of glasses. Glass lenses are difficult to wear, but they are heavy and easy to get tired after wearing for a long time. Resin lenses have low hardness, light weight, good clarity and high defense ability against ultraviolet rays.
Step 2 look at the nose pad
Nose rest is the key to the instability of glasses frame, but it is also the most easily overlooked place. There are three types of nasal supports: fixed, movable and nose-free. Among them, glasses without nose pads are only suitable for people with high nose. Choosing glasses with nose pads can reduce the load on the bridge of the nose.
The fixed nose rest is generally used on the plastic spectacle frame, which is integrally formed with the spectacle frame without maintenance, but the angle of the nose rest cannot be adjusted, so attention should be paid to the fit with the bridge of the nose when trying it on.
The movable nose rest can be adjusted according to the different conditions of each person, and has a certain range of activities to ensure the uniform stress on the bridge of the nose. However, it is necessary to check the tightness of the screws frequently, pay attention to cleaning and replace them regularly.
When trying on, the glasses frame has no lenses and is light in weight. You can gently press the upper edges of the left and right lenses with your hands. If the glasses slide down easily, the nose pad doesn't fit.
Step 3 look at the mirror legs
Appropriate temples can hook ears, and inappropriate temples can pinch temples, which makes people have a headache. When trying it on, if it feels too tight and clamps the temple, it is that the frame is not suitable. Metal spectacle frames are usually made thin to reduce weight. Some temples that are too thin will feel top-heavy, leading to the decline of glasses, and should be avoided as much as possible when purchasing.
In addition, we should also pay attention to whether the temples are too long or too short, because the temples are too long to fix the glasses, which leads to the glasses slipping; If the temples are too short, glasses can't be worn directly. Some temples are not bent enough to touch the ears and cannot effectively fix the glasses.
Glasses protection:
1, taking it off with one hand will destroy the left and right balance of the spectacle frame, resulting in deformation. I suggest you hold your temples with your hands and remove them in parallel on both sides of your cheeks.
2. Generally, the left temple is folded first when taking it, which is not easy to cause the deformation of the mirror frame.
3. It is suggested to wash glasses with clear water and absorb water with paper towels, and then wipe them with special glasses cloth. It is necessary to hold the edge wire of the mirror frame on one side of the wiping mirror and gently wipe the lens to avoid damaging the mirror frame or lens with excessive force.
When you don't wear glasses, please wrap them in glasses cloth and put them in the glasses case. If temporarily placed, please put the convex surface of the glasses upward, otherwise it is easy to wear out the lenses. At the same time, glasses should avoid contact with insect repellent, toilet cleaning supplies, cosmetics, hair gel, medicines and other corrosive substances, and avoid long-term direct sunlight and high temperature (above 60℃), otherwise it will easily lead to deterioration, deterioration and discoloration of lenses and frames.
5. Go to the specialty store regularly for plastic adjustment. The deformation of the mirror frame will burden the nose and ears, and the lens is easy to loosen.
6. Please don't use glasses during strenuous exercise, so as not to break the glasses due to strong impact, causing eye and face damage; Do not use worn lenses to prevent vision loss caused by scattered light; Please don't look directly at the sun or glare, so as not to hurt your eyes.