The good progressive eyeglasses frame should use the stable, safe, reliable material harmless to the skin, and the weight is light and strong without distortion. Here analysis tips about choosing frames from different perspectives. If the glass is used to be long time wearing, you can choose the lighter frames and wider other conditions to reduce the tiredness in wearing. If you would choose one for reading, watching TV or some times for eye-working, you could select entirely according to your needs.
For those people of high myopic, it is not advisable to select hemi-rimmed or rimless glasses, because the thick lens and the rimless glasses do not match very well and easily be broke down. People who have deep degree of astigmatism is not suitable fro rimless frames, because the glasses in rimless frame would change their axis after long time using, and cause the shape changing of the objects in sights. If wearing glasses is just to meet the needs of matching the image and attendance occasions, at the same time, the visual acuity has no high limits on the frame, you can select according to your specific need.
For people who often engage in substantial physical activity and movement, they should choose a more compact frame of plastic and sheet materials, in order to reduce the optical damage due to accidental blundering. Meanwhile, the advice to myopia patients is that lens in stead of framed progressive glasses should be wear when they take part in sports. The memory material glasses is good for busy people who are often on business trips, so as to avoid the deformation or damage of flames because of fraquently wearing or taking off and litter misplacing.
As consumer's demands become personalized, the function of fashion of the glasses has gained increasing attention. We should combine the choice of the styles with the current popular colors and elements. Meanwhile, you will have a definite object in view when buying the eyeglass frames if you can take the current popular styles into account. Lying the progressive lens in front of your eyes, observe the different shades of color of its leg. Sometimes because of the mistake of processing, the colors of legs lacking symmetry would happened.
The workmanship is the quality guarantee for glasses frame, and whether the workmanship of glasses is fine is usually represented in some details. Pay more attention to the surrounding of welding of metal frames to make sure whether there are some cracks. The thermal effect when welding changes the stress structure, or the cold solder joint and the material fatigue make it prone to fracture. Whether the two legs are flat or not. Keep the frame flat on the table, and see whether there is floating contacting point. If the two sides are different in height, it is necessary to ask the professionals to adjust the legs.
For the metal frame, you can scratch it by finger nail and see whether there is scratch on the paint surface. For the plastic frame, see carefully whether there is plastic spot on the surface, or whether it is smooth. Open and close the legs to feel the elasticity. The too tight leg shows the lackness of lubrication, causing the damage of legs easily. While too loose might be caused by the no tightened screws. The moderate tightness is the best. Both gold and titanium metals are precious metals, so there are corresponding signs on the frames made of the two materials. At the same time, there are rules in materials of glass frames: the stimulate materials can’t be use to make the frames. So when you are choosing frames, you should drop it if there is strange smell.
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