<p>We provide bifocal lenses and progressive lenses. Start by selecting&nbsp;a&nbsp;frame with a&nbsp;height over 30mm&nbsp;to enable the function of bifocal or progressive&nbsp;lenses and then input your prescription as requested.</p> <p>Please note bifocal/progressive lenses&nbsp;are needed when there is ADD in your prescription.&nbsp;</p> <p>Check <a href="/bifocal-glasses.html">here </a>for frames available with bifocal/progressive lenses.</p> <p>&nbsp;</p>
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Terms and Conditions

What is the material of your lens?

Lens Color

Lens Thickness/ Lens Index

How to choose lenses?

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

Photochromic & Transitions® Lenses Introduction

Lens Functions

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

How to use progressive glasses?

Do you have prism lenses?

Do the lenses include any coating?

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

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

Do you offer bifocal or progressive lenses?

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

Which kind of lenses are free?

Spherical VS Aspherical Lens (video)

Difference between Spherical Lens and Aspherical Lens

What type of bifocal lens do you use?