Crystal Vision CR39 Trifocal Lenses

Best basic trifocal on the market. 

This lined trifocal has three viewing areas - Distance, mid-range and reading.  The half moon 7*28mm viewing area has two visible lines, and the distance area is above that.  Crystal Vision Lenses 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.  Crystal Vision lenses are made by one of the world's largest lens company making top quality lenses.  All Crystal Vision Lenses  are made in the U.S., to exacting specifications, in an Essilor laboratory, and we are able to offer them at a great price point.  This lens is a good choice for corrections up to +/-3.00, and it is available with a variety of options such as Transitions, UV protection, sunglasses or fashion tint, standard Anti-Reflective coating, and the top-quality Crizal Alize and Crizal Avance coatings.