Let us go through various components of Integrated Marketing Communication: 1  The Foundation - As the name suggests, foundation stage involves detailed analysis of both the product as well as target market. It is essential for marketers to understand the brand, its offerings and end-users.
If the PD of your basic prescription is 29.5/31.0, the PD for computer glasses would be 29.0/30.5 or 28.5/30.0. To convert a multi-focal prescription for single vision reading glasses, simply combine the Add number and the Spherical number.
Best Answer: The numbers -5.25 and -5.50 refer to the corrective powers (in dioptres) of the lenses required to correct your vision. The minus sign means you require concave lenses that are thin in the middle and thicker on the edges to correct nearsightedness.