Do not pursue a high refractive index lenses, for 500 degrees or higher, buy 1.6 index or more; below 500 degrees, buy 1.6 index lenses, if more than 1000 degree, then buy 1.7 index lenses or above.
You have to take to steps to buy your prescription glasses: getting your glasses prescription and then buy your prescription glasses.
Local optical stores sell glasses at high prices, it is very common that a eyeglasses frame will cost your several hundred US dollars. in fact, the glasses frames and lenses are not so expensive. Local glases store have to pay store rent, optometry equipment, store decorantion, and workers salories, they must recover the cost, at the same time, they have to make profits, that is why if you buy your glasses at your local store, you have to pay more. If you buy glasses online, ie from www.cheapglasses123.com, you will save a lot, you will save up to 80%.
