planning to buy a pair of prescription eyeglasses frame with about 133 mm wide

[online glasses]

I want to buy a pair of prescription eyeglasses as my vision seems to decrease, I don't know if it is because of my working circumstance. So, I just come to some porfessional glasses forum looking for some help, I need bifocal lenses, and the frame should be 132 to 135 wide, between 28 and 31 height, and with spring hinges, which are rounded on the bottom. Anyone can give me a piece of advice? Thanks!