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.
The first sign that you may need multifocal contact lenses is if your prescription for glasses has numbers in the ADD column. Numbers in this column indicate that you are presbyopic to some extent. Although there is no set limit to what the ADD number can be, it usually ranges between +0.75 to +2.50. The higher your ADD number is, the more you stand to benefit from multifocal contact lenses. But more importantly than the ADD number, is how bothered you are by your vision up close.