<p>The ADD&mdash;short for Reading Addition&mdash;is the additional correction required for reading. It can be used to make either reading glasses, bifocal glasses or multifocal glasses. <strong>If you wish to choose bifocal/progressive lenses, the ADD number should be included in your prescription.</strong></p> <p>The &quot;addition&quot;&nbsp;is only required if the glasses are going to be used for reading or close work.&nbsp;<strong>Please&nbsp;kindly note that if you have ADD and choose distance glasses,&nbsp;the glasses can only be used for seeing far, not available for reading.</strong> Sometimes opticians use the word &quot;Add&quot;&nbsp;or &quot;Near&quot;&nbsp;instead of &quot;addition&quot;. They may only write it once, but it normally applies to both eyes and is almost always the same value for both eyes (e.g. &#39;Add&#39; +2.50 - should be entered for both eyes).<br /> <br /> Here is a reference.</p> <p>Age&nbsp; &nbsp; &nbsp; &nbsp; Add Power<br /> 35-39&nbsp; &nbsp; &nbsp;Plano<br /> 40-44&nbsp; &nbsp; &nbsp;+1.00<br /> 45-49&nbsp; &nbsp; &nbsp;+1.50<br /> 50-54&nbsp; &nbsp; &nbsp;+2.00<br /> 55-59&nbsp; &nbsp; &nbsp;+2.50<br /> 60-64&nbsp; &nbsp; &nbsp;+3.00</p>