The Eyeglasses Refractive Error Should Be Within The Standard Required Range
Resin lenses mainly require precise astigmatism axis position, accurate luminosity, and no scratches, bubbles, or impurities on the lenses. The degree of the prepared childrens glasses must meet the testing standards. The error of refractive error should be within the standard required range.
Many people use the ability to see clearly as a measure of whether glasses are well-matched. Seeing is just one indicator, and the other two indicators determine whether it can be seen clearly and comfortably for a long time. For example, when opting for a person with presbyopia, using several degrees can make them see clearly, but only the degree that makes the optician feel comfortable and long-lasting is most suitable.
Optometry includes at least three parts: computer optometry, comprehensive optometry instrument optometry, and patch fitting test. Add measurement of old mirror parameters, etc.
The quality of the cheap eyeglasses near me frame can be seen from its appearance, after all, it is an item that comes into contact with the skin, and a smooth and delicate surface is necessary. There are steps at the junction of the frame and the foot of the mirror, which are not smooth. There is a problem with the process, which is not a problem that good factories will encounter. The surface of the mirror frame is electroplated or painted with small areas peeling off, or there are ripples on the side. The surface treatment is very rough, and there must be durability issues.
Carefully examine the left and right lenses for asymmetry (viewed from the central axis). Indicates that there is an issue with the welding or mold. In some cases, the angle of the lens installed (optical lenses with polished characteristics, not display lenses included in the frame) is misaligned.
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