Why progressive lens glasses are so expensive?

[Broderick]

I am looking for progressive glasses for my uncle and i find they are more expensive than other prescription glasses. Why are they so expensive?

[Maxx]

Progressive lens glasses are more expensive than regular eyeglasses because they are made differently. Regular eyeglasses lenses only have one focus that only help people to see far or near. However, progressive lenses have many focus on the lenses that allow you see all distances from far distance to things around you. Besides, compared with bifocal lenses, progressive lenses are more beautiful because there is no visible lines on the lenses.

[Elian]

Many people suffer both myopia and hyperopia. This problem makes these people feel very inconvenient, because they have to change glasses when they see near distance from far distance. progressive glasses solved this problem. People who wear progressive glasses can see both near and far distance without changing glasses. Because the lenses are very special, the price is higher compared with the normal prescription glasses. The material and the processing technology both increase the cost of progressive glasses.