Lens Discount is a specialized in manufacturing tle eye glasses lenses and supplying them with low price, and there are two ways of supplying the lenses to the customer. You send us your lens measurments by email and send your glasses by post so we can fit the lenses in to your glasses and send it back to you within 4 days or you can just email your lenses measurments and we send you the lenses and in this case you will have to take them to your optician to fit them in to your glasses.