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Bifocal (With Line) Lenses

Bifocal lenses are lenses with two reading areas, that are separated by a visible line, which distinguishes these lenses from the new progressive lines which do not have a visible line.  The most common bifocal lenses are designed with a half-moon shaped reading area in the bottom half of the lens, called a "flat top".   

However, some people prefer the "executive" or “Franklin” style, in which the lens is bisected by a horizontal line  across the entire width of the lens.  We supply the flat top 28 unless you specify otherwise.  Bifocal lenses are the most cost effective way to create a lens with two viewing areas.   In the past, most bifocal lenses were made with a distance and a reading area; nowadays, people are making bifocals with an intermediate area for computer and pad use, together with either a distance area or a reading area. 

Once you have decided on the type of bifocal lens, you can then add coatings and services such as Anti-Reflective coating, Transitions, and many more.

CR-39 (regular plastic)

Crystal Vision CR39 Bi-Focal
$75
Crystal Vision CR39, flat top 28 bifocal. The reading area has a half moon shape with a "flat top", in the bottom area of the lens. Good for prescriptions up to +/-4.00 sphere. Read More Crystal Vision plastic CR39 lenses for bi-focal vision distance viewing means that the reading area has a half moon shape with a "flat top", in the bottow area of the lens.  The standard CR39, flat top 28 bifocal has a reading area that is 28mm wide at the top.  This is a good choice for prescriptions up to +/-3.00 sphere; above that, we would recommend a higher index lens in order to reduce the thickness and weight of the lens.  This lens is available in the following range: -5.00 to +3.00 sphere, -4.00 to +3.00 cylinder, and up to +3.00 add (prism and slab off excluded). This lens is also available in the Flat Top 35 style, and in the Executive of "Franklin" style.  For the Flat Top 35 stye, the reading section is 35mm across thte top.  For the Executive style, the line bisects the entire lens from one side to the other.  After you have selected this lens, you will see the Flat Top 35 Upgrade option and the Executive Bifocal Upgrade option that you can then select.  Crystal Vision Lenses are top quality lenses at a reasonable price point.
Crystal Vision Executive Bi-focal
$119
This CR39 bi-focal has a straight line across the entire length. Also known as "Franklin" style bifocals. Good for prescriptions up to +/-4.00.

High-Index 1.59 Polycarbonate

Crystal Vision Polycarbonate Bi-Focal
$99
Crystal Vision polycarbonate, flat top 28 bifocal. The reading area has a half moon shape with a "flat top", in the bottom area of the lens. Good for prescriptions over +/-3.00 sphere. Read More Crystal Vision polycarbonate bifocal lenses for reading and distance vision viewing means that the reading area has a half moon shape with a "flat top", in the bottow area of the lens.  The Crystal Vision polycarbonate, flat top 28 bifocal has a reading area that is 28mm wide at the top.  This is a good choice for prescriptions over +/-3.00 sphere.  This lens is available in the following range: -9.75 to +5.00 sphere, -3.75 to +3.00 cylinder, and up to +3.00 add (prism and slab off excluded). This lens is also available in the Flat Top 35 style.  For the Flat Top 35 stye, the reading section is 35mm across thte top. After you have selected this lens, you will see the Flat Top 35 Upgrade option and the Executive Bifocal Upgrade option that you can then select.
Zeiss Polycarbonate SV
$148
Zeiss is the world's pre-eminent brand of precision optics. If you are looking for the best, look no further than Zeiss. The Zeiss Polycarbonate lens is a great choice for corrections up to +/-6.00. Read More The Zeiss polycarbonate a lens that incorporates all of the history and technological perfection inherent in all Zeiss products.  This particular lens is available in a range up to  +/-6.00 sphere or +/-4.00 cylinder; for higher prescriptions, additional charges may apply. Zeiss is the worldwide leader in excellence in optical lenses.  Founded as a workshop for precision mechanics and optics in the German city of Jena in 1846, the Carl Zeiss Group of today is a global leader in the optical and optoelectronic industries. There are currently more than 24,000 employees in the Group. The Group is represented in more than 30 countries by more than 50 sales companies. The company’s production centers are located in Europe, North America, Central America and Asia. Carl Zeiss is headquartered in Oberkochen, Germany. Carl Zeiss AG is fully owned by the Carl-Zeiss-Stiftung (Carl Zeiss Foundation). Carl Zeiss offers innovative solutions for the future-oriented markets of Medical and Research Solutions, Industrial Solutions, Eye Care and Lifestyle Products. The company develops and distributes surgical microscopes, diagnostic systems for ophthalmology, microscopes, lithography optics, industrial measuring technology, eyeglass lenses, planetarium technology, optronic products, camera and cine lenses, as well as binoculars and spotting scopes.

Glass

Crystal Vision Glass Bifocal
$159
Glass lined bi-focal with half moon magnifying area, flat top 7x28. Glass lenses have much better optics than plastic lenses, and have much better scratch resistance. Read More Bifocal lenses made with the glass lenses material for bi-focal vision distance viewing means that the reading area has a half moon shape with a "flat top", in the bottow area of the lens.  The standard glass, flat top 28 bifocal has a reading area that is 28mm wide at the top.  This is a good choice for prescriptions up to +/-3.00 sphere; above that, we would recommend a higher index lens in order to reduce the thickness and weight of the lens.  This lens is available in the following range: -5.00 to +3.00 sphere, -4.00 to +3.00 cylinder, and up to +3.00 add (prism and slab off excluded).  Crystal Vision Lenses are top quality lenses at a reasonable price point, and come with our Perfect Lenses Guarantee.  
Crystal Vision Glass Bifocal High Index
$189
High Index glass lined bi-focal with half moon magnifying area, flat top 7x28. Glass lenses have much better optics than plastic lenses, and have much better scratch resistance. Read More Bifocal lenses made with the glass lenses material for bi-focal vision distance viewing means that the reading area has a half moon shape with a "flat top", in the bottow area of the lens.  The standard glass, flat top 28 bifocal has a reading area that is 28mm wide at the top.    Crystal Vision Lenses are top quality lenses at a reasonable price point, and come with our Perfect Lenses Guarantee.