How do I read my prescription?

<div class="_help_font_site selected-art-author"> <p style="margin-left:18pt; margin-right:0cm"><iframe frameborder="0" height="315" scrolling="no" src="https://www.youtube.com/embed/TYgDpgvju9w" width="500"></iframe></p> <p style="margin-left:18pt; margin-right:0cm">Rx:<img alt="" src="https://df5apg8r0m634.cloudfront.net/email/2024/1017/tYtABW6K0iqmNeA2.jpg" /></p> <div style="margin-left:0pt; margin-right:0cm"><strong>OD</strong>=right eye     <strong>OS</strong>=left eye     <strong>OU</strong>=both eyes<br />  </div> <div style="margin-left:0pt; margin-right:0cm"><strong>RX</strong>=prescription<br />  </div> <div><strong>SPH(</strong>Sphere/Spherical): This indicates the amount of lens power, prescribed to correct nearsightedness or farsightedness. If the number appearing under this heading has a minus sign (–), you are nearsighted; if the number has a plus sign (+) or is not preceded by a plus sign or a minus sign, you are farsighted.  The larger the number following the +/-, the stronger the prescription.</div> <div> </div> <div><strong>CYL(</strong>Cylinder/Cylindrical): This indicates the amount of lens power for astigmatism. This number also has "+" or "-" signs. If "DS" or"SPH" or "spherical" or "PL" is stated under CYL, it means you have no astigmatism. </div> <div> </div> <div><strong>Axis:</strong> This number indicates the orientation of your astigmatism and is measured in degrees. It will be between 1 and 180. If an eyeglass prescription includes cylinder power , it must also include an axis value, which follows the cylinder power.</div> <div> </div> <div><strong>Add:</strong> Short for Reading Addition, this is the additional correction required for reading. It can be used to make either reading glasses, bifocal glasses or multifocal glasses.</div> <div> </div> <div><strong>PD:</strong> Pupillary Distance is the distance between your pupils in millimeters. Your PD is very important for accurately fitting your lenses to achieve visual acuity.</div> <div> </div> <div><strong>Prism</strong>: refers to the prismatic power used to correct vision displacement. It helps to correct some special conditions or some eye disorders (like squints) that require the focused image to move position. The measurement is Prism Dioptre. The value may be as high as 10 and may go up in steps of ½ or 1 Prism Dioptre's.</div> <div> </div> <div><strong>PL</strong>: Plano. Latin for "flat." If this is in the SPH section of an Rx, it means no nearsighted or farsighted correction is needed.</div> </div>