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Many people often only pay attention to aesthetics when choosing glasses frames for myopia. In fact, the optical and measurement technical indicators of the glasses frames are very important for the comfort of consumers wearing glasses. The choice of eyeglass frames should be considered from three parts: frame aesthetics, frame function, and wearing comfort. Spectacle frames also come in their own sizes. Generally, parameters such as the size of the spectacle frame are marked on the temple, bridge of the nose, or sign.

What are the essential factors for a good pair of glasses frames?

As far as the frame itself is concerned, there are mainly three factors: material, craft details, and design.

Material: Mainly divided into metal, plastic, and other materials. The preferred material for metal is titanium, which is pure titanium, B titanium, or titanium alloy. The advantages of titanium are that it is relatively light, has good stability, and is not easy to oxidize. The disadvantage is that it is not easy to weld after the solder joint is broken. Some other metal glasses are actually good, most of them are stainless steel, and they are processed after electroplating. The most common type of plastic is sheet metal. This material is relatively heavy, has texture, shows temperament, has good color and luster, and is not easy to peel. The disadvantage is that the metal hinge is easily damaged by an external force. Another common plastic material is TR90. We have seen many glasses in Korean dramas that look very light and dazzling are made of this material, but TR90 is easy to peel and break. Other materials include wood, bamboo, etc., but they are not mainstream.

Process details: You can listen to whether the sound of hinge opening and closing is smooth, look at the smoothness of the frame, whether the electroplating surface is even and shiny, whether the LOGO is engraved, or silk-screened. If you feel that you can't identify, you can go to a professional eye hospital to choose brand frames.

Design: Including brand concept, style, style, and color, each series interprets different styles, which can be selected according to their own personality, temperament, and dress style.

In addition to good-looking frames, you also need to pay attention to the comfort of glasses

Several important dimensions that affect glasses' comfort

1. Mirror foot opening size: To confirm whether the mirror foot opening size is too small? So as not to oppress the temples, or push the frame forward and other problems.

2. The size of the foot and foot of the mirror: you need to refer to your own mirror frame, it is better to be about 10mm smaller than the old mirror.

3. The size of the corner of the mirror foot: if the corner is too short, the frame will tilt forward, which actually increases the angle of inclination; if it is too long, the weight of the front end will be less, and it will easily slide down.

4. Degree of inclination: if the inclination is too large, the lower edge of the frame may even rest on the face; if the inclination is too small, the frame will turn out.

5. The fit of the nose pads: The larger the area of the nose pads that fit the nose, the better the comfort. On the contrary, the worse. Also pay attention to the distance between the nose pads and the eyelashes, especially for women, so that the eyelashes do not touch the inner surface of the lens. 

6. Pupil height position: After the lens is installed, it is necessary to consider whether the pupil height is too low under normal wearing conditions so that the frame has to be pushed up frequently.

7. The mirror foot decoration is too long: the decorative piece is too long, which affects the necessary flexibility of the mirror foot, and the comfort will be affected.

Limitations of different optometry prescriptions on frame material and structure

1. It is not recommended to choose frameless frames with locking screws, because once the screws are loosened, the axis of astigmatism will change.

2. If there is a large difference in the degree of the left and right eyes, it is easy to wear and slowly skew when the frame is improperly selected. It is recommended to choose a frame with a wide range of materials and structures that can be adjusted.

3. If the joint degree is higher than 600°, the front end is heavy, and the material of the temple with good elasticity should be carefully selected, such as TR, plastic steel (PEI), stainless steel, beta-titanium, etc.

4. If the joint degree is higher than 600°, the front end is heavy, the temple foot cover part is straight or the curvature is small.

5. For those with a higher degree (greater than 600°), carefully choose the hinge of the slingshot of the temple, because the over-clamping of the slingshot affects the comfort, and the loose frame surface is prone to frequent slippage.

6. If the face is asymmetrical and the ears are high or low, it is not recommended to use wide footplates (the inclination cannot be adjusted), mirror foot materials with strong elasticity (TR, plastic steel PEI, stainless steel, beta-titanium, etc.), integrated nose pads and other frames.

7. If the bridge of the nose is slightly crooked and the wing of the nose is asymmetrical, it is not recommended to use an integrated nose pad or a nose pad with a small adjustable range.
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