Why do perscription Glasses and Contact lenses cost so much?

[Flower Mound]

Why do perscription Glasses and Contact lenses cost so much, especially contact lenses which are specially required for Astigmatism.

[Floweree]

usually I don't have a high demand for prescription glasses as long as they are in the right prescription and won't have bad effect on my vision . I often order my frames and lenses online which costs no more than $50 altogether . But for the contact,as it has the direct contact with my eyes , good quality always makes me feel assured , the cost is approxiamately $ 200 for one year . but I don't use contacts too much unless in some certain occasions .