For the majority of us, presbyopia is something we have to live with. By definition, presbyopia is the lack of concentration on things up close. The cause is that the lens of our eyes becomes less and less flexible as we age. The problem is that most of us will need some type of corrective lenses, like contact lenses or glasses, and maybe even bifocals, at some point in our lives. life, as this condition worsens. Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get an Original Essay Until recently, those who wore bifocals had very limited options when choosing their prescription lenses. Years ago, glasses with bifocal lenses were pretty much the only option available. Over the years, lineless lenses were created and glasses became a little more attractive. This was a watershed era for bifocal contact lenses, as they looked much better than ever before - eliminating the bulky, unattractive look they were well known for. Nowadays, you can find many different types of bifocal contact lenses on the market. They are growing in popularity because they offer those who wear bifocal glasses a very attractive alternative to wearing bulky glasses. They are also very affordable, making them a more popular choice in the world of prescription lenses. What many may not realize is that bifocal contact lenses are very similar to glass lenses in how they work. With glass lenses, each separate lens offers a range of focus settings, one for distance and another for getting closer to something. With bifocal contact lenses, both adjustments are included. There are different manufacturers that produce different types of bifocal contact lenses, which means it may take a little research and experimentation to find the type that suits you best. Some lenses, however, are made with a unique design, called concentric. Similar to concentric circles, there are two fits: one in the middle and one around the outside. These two fits in the contact lens are very distinct, with a sharp line between them. Although they may seem difficult to use, most people find them easy to use with a little practice. One type of bifocal lens is the aspherical lens, which has a more gradual change in focus. Both powers are in the central pupil area and, as with the concentric lens, your eye will immediately adapt to these lenses and decide which focus is best to use. The third and perhaps best lens for bifocal use is the translational lens. . Just like bifocal glass lenses, the near correction is at the bottom of the lens and the distance correction is at the top. These lenses are not able to move while in the eye because they are normally designed in such a way that they cannot move. This can be ideal for older people because these contacts won't move no matter what you do. Keep in mind: this is just a sample. Get a personalized article from our expert writers now. Get a Personalized Trial When it comes to bifocal contact lenses, you should always ask your optician what they think is best for your eyes. If you meet the right criteria, there are strong..