Both lenses and discount prescription glasses frames have a lifespan, and no matter how well maintained, it is important to remember to replace them regularly. The lens film layer will peel off when exposed to high temperatures, remember not to place it in the car or areas with high oil fumes and temperatures.

Sweat and rain can corrode metal frames, remember to dry them indoors. Each step of fitting discount eyeglasses online is important. First of all, the fitting of glasses usually includes steps such as optometry, product selection, processing, and manufacturing. Each link in between is very important and cannot tolerate any trouble.

Accurate prescription is the first step in successful fitting, selecting the appropriate pupil distance and face shape frame is the second step, selecting the lens that suits your needs is the third step, and precise processing is the fourth step.

Optometry requires a combination of objective optometry (computer optometry or retinoscopy) and subjective optometry (comprehensive optometry). After determining the degree, a patch test should be conducted to ensure that the degree can be comfortably worn regularly.

The selection of the cheapest eyeglasses online products needs to consider both aesthetics and applicability. Good looks are indeed important, but optical parameters such as pupillary distance and degree should also be considered.

The size of the frame should not be too large to avoid an inappropriate distance between the pupils. The thinner the lens, the better. It is necessary to choose the appropriate refractive index according to the degree.

Producing a standard pair of glasses requires good equipment, professional personnel, and a responsible attitude. Calibration after processing is also very important and essential, as it can solve many discomfort problems during initial wear.