Due to the limitations of different optometry prescriptions on the material and structure of the cheapest eyeglasses online frame, it is not recommended to choose frameless frames with locking screws for astigmatism, as once the screws become loose, the astigmatism axis will change.
The length of the eyeglass's foot decoration affects the necessary flexibility of the eyeglass's foot, and the comfort will be affected. If there is a significant difference in the degree of the left and right eyes, improper frame selection can easily cause it to slowly tilt when worn. Choosing a frame with a wide range of adjustable cheapest eyeglasses online materials and structures is recommended.
If the joint degree is higher than 600 ° and the front end weight is relatively large, it is advisable to carefully choose materials with good elasticity for the eyeglass legs, such as TR、 Plastic steel, stainless steel, beta-titanium, etc. If the joint degree is higher than 600 °, the front end weight is relatively large, so be careful to choose an eyeglass foot cover that is straight or has a small curvature.
For those with a high degree (greater than 600 °), be careful when choosing the hinge of the eyeglasses foot slingshot, as the slingshot is too tight and affects comfort, and the loose frame surface is prone to frequent sliding.
For those with facial asymmetry and ear height, it is not recommended to use wide foot plates (unable to adjust the tilt angle), elastic eyeglasses foot materials (TR, plastic steel PEI, stainless steel, β titanium, etc.), integrated nose pads and other cheapest eyeglasses online frames.
For those with slightly crooked nasal bridges and asymmetrical nasal wings, it is not recommended to use an integrated nose pad or a nose pad with a small adjustable range.
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