Some of us need different strength lenses for distance and close up activities. One solution to this is to have a separate pair of spectacles for each e.g. one pair for reading, and one pair for watching TV or driving. With Bifocal lenses you only need one pair of glasses as they have two prescriptions within one lens, usually reading in the lower half and distance in the upper. This means that you only need one pair of glasses whether you are reading a newspaper or watching TV – or both!
Kodak Bifocal Lenses are available in a choice of materials from conventional through to 1.6 Thin & Lite plastic. These can be enhanced with many different options, from anti-reflection coatings to fast-reacting sun lenses. Whatever your lifestyle, we can make a lens for you.
Many Kodak Bifocal Lenses have the added advantage of having an aspheric design. In an aspheric design, the lenses have flatter curves. This means that they do not “bulge” out of the frame as much as regular lenses. The side profile of aspheric lenses is thinner, which greatly enhances the appearance of finished spectacles. They also give enhanced overall vision especially in higher prescriptions.
Made from polycarbonate, these lenses are impact resistant and ten times stronger than standard plastic making them ideal for sports, children, safety glasses and rimless frames.
Kodak Thin & Lite Lens – 1.6
Up to 55% flatter, 40% lighter and 36% thinner than standard plastic lenses
Kodak Thin & Lite 1.6 Lenses come with RLX Plus® as standard. Unlike the majority of high index lenses, Kodak Thin & Lite 1.6 Lenses offer 100% protection against the sun’s harmful UV rays as standard.
Where can I buy Kodak Bifocal Lenses?
Like all our technologically advanced lenses, Kodak Bifocal Lenses are available from approved Kodak Lens Distributor.
Looking after your lens health
Kodak Anti-Reflection Lens coatings improve both the vision you experience through your lenses and the appearance of the lenses themselves.
8% of light becomes reflections on uncoated lenses; these reflections interrupt your vision, making it less clear than with a coated lens. They are also distracting for people looking at you as they do not have a clear view of your eyes.
Kodak CleAR and Clean ‘N’ CleAR Lens coatings virtually eliminate reflections on your lenses. They enable 99.6% of light to reach your eyes. The coatings are available on all KodakLenses, and are highly recommended for anyone who uses a computer, spends time in artificially lit environments,who drives, or who wants to improve the appearance of their glasses.
Kodak CleAR Lens Coating
Why make your eyes work any harder than they have to? Your vision works by processing light through your eyes, and ordinary lenses reflect approximately 8% of light away from the eye. However, you can gain clearer vision with KodakCleAR Lens Coating which works to eliminate all reflections.
Kodak CleanNClear Lens Coating – Anti-reflection with built in dirt & water repelling properties
Gain all the benefits of Kodak CleAR lenses with the added benefit of CLEAN- ability. Its hydrophobic properties also allows water to run off easily.
Benjamin Franklin is generally credited with the invention of bifocals. Historians have produced some evidence to suggest that others may have come before him in the invention; however, a correspondence between George Whatley and John Fenno, editor of The Gazette of the United States, suggested that Franklin had indeed invented bifocals, and perhaps 50 years earlier than had been originally thought. However the College of Optometrists concluded:
- Unless further evidence emerges all we can say for certain is that Franklin was one of the first people to wear split bifocals and this act of wearing them caused his name to be associated with the type from an early date. This no doubt contributed greatly to their popularisation. The evidence implies, however, that when he sought to order lenses of this type the London opticians were already familiar with them. Other members of Franklin’s circle of British friends may have worn them even earlier, from the 1760s, but it is at best uncertain (and arguably improbable?) that split bifocal lenses had a famous gentleman inventor. 
Since many inventions are developed independently by more than one person, it is possible that the invention of bifocals may have been such a case.
John Isaac Hawkins, the inventor of trifocal lenses, coined the term bifocals in 1824 and credited Dr. Franklin.
In 1955, Irving Rips of Younger Optics created the first seamless or “invisible” bifocal, a precursor to all progressive lenses.
Original bifocals were designed with the most convex lenses (for close viewing) in the lower half of the frame and the least convex lenses on the upper. Up until the beginning of the 20th century two separate lenses were cut in half and combined together in the rim of the frame. The mounting of two half lenses into a single frame led to a number of early complications and rendered such spectacles quite fragile. A method for fusing the sections of the lenses together was developed by Louis de Wecker at the end of the 19th century and patented by Dr. John L. Borsch, Jr. in 1908. Today most bifocals are created by molding a reading segment into a primary lens and are available with the reading segments in a variety of shapes and sizes.The most popular is the D-segment, 28 mm wide. While the D-segment bifocal offers superior optics, an increasing number of people opt for progressive bifocal lenses.
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