Trifocal (With Lines) Lenses

Trifocal lenses are lenses with three 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 trifocal 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 two horizontal line across the entire width of the lens.   

Trifocal lenses are the most cost effective way to create a lens with three viewing areas.  Trifocal lenses are uncommon now, with the advent of progressive no-line lenses.  Trifocal lenses are a good choice for people that are looking for an economical alternative to progressive lenses.  Also, many people use trifocal lenses for close up work like fly tying, needlepoint, and other activities that require looking at detailed work.  Trifocal lenses are only available in the "flat-top 28" style.

CR-39 (regular plastic)

Crystal Vision CR39 Trifocal
$99.00
Three viewing areas with this lined tri-focal. Distance, mid-range and reading. Half moon 7*28mm viewing area with two lines. Read More Info Crystal Vision plastic CR39 lenses for trifocal vision distance viewing means that the reading area has a half moon shape with a "flat top", in the bottom area of the lens.  The trifocal lens has three viewing areas, and the magnification area has two viewing areas, one for reading and one for intermediate distance.  The standard CR39, flat top 28 trifocal 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: -6.00 to +2.75 sphere, -4.00 to +3.00 cylinder, and up to +3.00 add (prism and slab off excluded).
Trifocal CR39 Transition
$209.00
Plastic Tri-focal lens with transition feature in Brown or Grey. Reading area is 28mm wide by 7mm tall in a half moon shape. Read More Info Standard plastic CR39 lenses for trifocal vision distance viewing also include Transitions technology, so the lenses will turn dark outside and light inside.  "Trifocal" means that the reading area has a half moon shape with a "flat top", in the bottom area of the lens.  The trifocal lens has three viewing areas, and the magnification area has two viewing areas, one for reading and one for intermediate distance.  The standard CR39, flat top 28 trifocal 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 +4.00 sphere, -4.00 to +3.00 cylinder, and up to +3.00 add (prism and slab off excluded).
Trifocal CR39 Polarized
$210.00
Three viewing area lens with polarization for sunshine glare reduction. Read More Info Standard plastic CR39 lenses for trifocal vision distance viewing also include tinted Polarization technology, making them great for outdoor activities on the water where there is a lot of glare reduction needed.  "Trifocal" means that the reading area has a half moon shape with a "flat top", in the bottom area of the lens.  The trifocal lens has three viewing areas, and the magnification area has two viewing areas, one for reading and one for intermediate distance.  The standard CR39, flat top 28 trifocal 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: -6.00 to +3.00 sphere, -4.00 to +3.00 cylinder, and up to +3.00 add (prism and slab off excluded).
Trifocal Executive CR39
$219.00
The Executive Trifocal has two visible lines that go horizontally all the way across the lens, dividing the lens into three viewing areas.