Buying eyeglasses online is more economical than buying it at an optical shop. But how will you purchase perfect fitting glasses if you can’t try them on? Here are some helpful tips:
Know the frame dimensions such as the frame width which measures the whole horizontal front of the frame; lens height, the vertical height of the lens; the temple arms which connects to the front of the frame on either side and rests at the back of the ear; lens width, the horizontal diameter of one lens; and the bridge which is the part that goes across the bridge of the nose. Check the inside of the temple arm for numbers which indicate the three frame dimensions. Provide a space of 2 to 3 mm on each measurement except for the bridge which should only have 2 mm. The frame width, however, is not shown on the temple arm. You will have to do the measurements yourself. Also remember that if the SPH is +/- 6.00, it’s best to have a lens width that’s lower than 50 mm.