<p>1. Measure your old pair of glasses to get the dimensions that&nbsp;fit&nbsp;you the best.&nbsp;With these measurements, you can easily compare them to the&nbsp;frames on our website. Please see the photos below for guidance on frame measurements (a 2mm difference is acceptable).</p> <p><br /> <br /> <img alt="" src="https://df5apg8r0m634.cloudfront.net/email/2019/1225/ttomel2W9229g0ks.jpg" /><img alt="" src="https://df5apg8r0m634.cloudfront.net/email/2019/1225/F2rKzgUQaU8pg17s.jpg" /> &nbsp; &nbsp;&nbsp;</p> <p>&nbsp; Diagonal length refers to the&nbsp;diagonal measurement of each lens, corner to corner.&nbsp;</p> <p>&nbsp;</p> <p>2. You may also find the dimensions printed on the temple arm of your old glasses.</p> <ul> <li>54 stands for Lens Width, which is the horizontal width (in millimeters) of each lens.</li> <li>18 stands for&nbsp;Bridge Distance, which is the distance (in millimeters) between your two lenses.</li> <li>140 stands for&nbsp;Temple Length, which is the length (in millimeters) from each screw to its temple tip.</li> </ul> &nbsp; <p><img alt="" src="https://df5apg8r0m634.cloudfront.net/email/2019/1225/kGOO4K83HLFJJ41i.jpg" /></p> <p>3. Try on some glasses at a local optical store, note the size that fits you and then find a similar size on our website.<br /> &nbsp;</p> <p>4. We divide our frames into 3 categories: Narrow, Medium and Wide.&nbsp;&nbsp;The size represents the total width of the frame:</p> <p><strong>Narrow:</strong>&nbsp;Total Width&nbsp;&lt;129mm</p> <p><strong>Medium:&nbsp;</strong>&nbsp;Total Width 129mm to 135mm</p> <p><strong>Wide: </strong>Total Width&nbsp;&gt; 135mm<br /> &nbsp;</p> <p>You can use these sizes to filter results when searching for frames on our website.<br /> <br /> <img alt="" src="https://df5apg8r0m634.cloudfront.net/email/2022/0630/WaesortcylkLjObT.png" style="height:350px; width:750px" /></p>
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Sunglasses

Lens Color

Lens Thickness/ Lens Index

How to choose lenses?

Photochromic & Transitions® Lenses Introduction

What coatings and add-ons do you offer for your lenses?

Do you have prism lenses?

What is the material of your lens?

Can I buy lenses only to fit into my old glasses frame?

How to use progressive glasses?

Difference between Spherical Lens and Aspherical Lens

Lens Functions

What's the difference between basic coated lenses, standard coated lenses and blue-light blocking lenses?

What're the difference between Tint lens, Photochromic lens and polarized lens?

Do you offer bifocal or progressive lenses?

Which kind of lenses are free?

What type of bifocal lens do you use?

What is the difference between single-vision and bifocal/progressive lenses?

Do the lenses include any coating?

Spherical VS Aspherical Lens (video)