<div class="_help_font_site selected-art-author"> <p><strong>TABO prescription</strong>:&nbsp;Both the left and right eye axis&nbsp;are&nbsp;measured counterclockwise.</p> <p><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><img alt="" src="https://df5apg8r0m634.cloudfront.net/images/2019/0417/vJ28XkHpA6.png" /></span></span></p> <p><br /> <strong>INT prescription</strong>:&nbsp;The right eye axis is measured counterclockwise and the left axis&nbsp;clockwise.</p> <p style="margin-left:0cm; margin-right:0cm; text-align:justify"><img alt="" src="https://df5apg8r0m634.cloudfront.net/images/2019/0417/wVEpgDmhc2.png" /></p> <p>INT prescription is only used by some Italian, Swiss and French ophthalmologists, while the rest of the world standard is TABO. And <strong>the Firmoo standard is also TABO.</strong><br /> <br /> The Axis of INT prescription needs to be transferred Into TABO prescription before fill in the prescription on our site.</p> <p>(Uploading a photo of your prescription is highly recommended, to avoid mistakes when filling out the&nbsp;Rx form&nbsp;and to provide our professional optometrists with accurate technical information. )</p> <p>&nbsp;</p> <p>For example, the following picture shows the INT prescription as this one:</p> <p>OD: SPH -0.25&nbsp; &nbsp; CYL -3.50&nbsp; &nbsp; Axis 180</p> <p>OS: SPH +0.50&nbsp; &nbsp; CYL -4.50&nbsp; &nbsp;Axis 15</p> <p style="margin-left:0cm; margin-right:0cm; text-align:justify"><img alt="" src="https://df5apg8r0m634.cloudfront.net/images/2019/0417/1k159dmev6.jpg" /></p> <p>To get the prescription in TABO system, the axis for the left&nbsp;eye should be 180 minus 15.</p> <p>So the TABO prescription we get should be the following one.</p> <p>OD: SPH -0.25&nbsp; &nbsp; CYL -3.50&nbsp; &nbsp; Axis 180</p> <p>OS: SPH +0.50&nbsp; &nbsp; CYL -4.50&nbsp; &nbsp;Axis 165</p> </div>