With the aging population, more and more people need to wear presbyopia eyeglasses online to see things up close. And hyperopic patients also need to wear hyperopic glasses to correct their vision.
Whether it is presbyopia glasses or farsightedness glasses, their lenses are essentially lenses with a refractive power greater than 0.00D. The common old lenses on the eyeglass mart are now in pieces. During assembly, the lenses may be too small to fit, the assembled lenses may appear too thick, or the weight difference between the left and right lenses may be too large.
In theory, for secure installation and safe use, we cannot make the edges of the lens too thin. However, increasing the thickness of the edges will also increase the overall thickness of the lens, resulting in a significant increase in the weight of the lens.
From the perspective of patients, they need thin and lightweight lenses to reduce pressure on the nose bridge (especially for patients who require high orthorectified vision).
In terms of aesthetics and visual effects, sometimes we need to intentionally increase the thickness of one lens to make the weight of the left and right lenses equal, to ensure that the glasses will not tilt during wearing.
So how do we deal with the contradictions between these parties in a reasonable way? You can choose suitable cheap eyeglasses near me frame; Choose appropriate lens materials; Choose the proper lens design type; Choose customized pieces at the appropriate time; and Choose a reasonable lens processing method.
The weight of the frame also depends on the volume and specific gravity of the material. Hence, choosing frames with low specific gravity and small volume is beneficial for reducing the weight of the frame itself.
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