Bifocal glasses were first invented by Benjamin Franklin, one of the founders of the United States. He simply cut two pair of different prescription spectacles in half and combined them together for each eye. This is the fundamental principle of bifocal lenses, even though technological techniques have progressed significantly until now. With his creative design, Benjamin Franklin could see distance objects as clearly as the near ones. (more…)
If you are a man who is a place where you need reading glasses, you will find that taking a look at men’s bifocal reading glasses is something that would benefit you. Many people are aware of the fact that bifocals will allow you to account for both near sightedness and far sightedness at the same time, but were you aware that they did not have to be the same boring model that have been around for ages? (more…)
Bifocal reading glasses are a special category of prescription glasses. The most outstanding feature of them is that one bifocal lens has two separate powers. The upper power is used to correct nearsightedness and the lower power is for presbyopia. Compared with single vision reading glasses, bifocal glasses can still offer vision correction for nearsighted individuals. This is the most widely recognized advantage kept by bifocal glasses. In fact, bifocal reading glasses differ from reading glasses only in lens power. Other factors such as eyeglass frame materials and lens materials are almost the same. For instance, there are available plastic frame bifocal reading glasses as well as metal frame ones. The difference is similar to other forms of glasses that plastic frame bifocal reading glasses are often slighter. This articles focuses on introducing shortcomings of bifocal glasses, including plastic frame ones. (more…)
Safety eyewear is an essential item in a large number of jobs and hobbies, but if you have presbyopia and you require eye protection, how can you kill two birds with one stone? By wearing the safety glasses with bifocal. It combines both features of safety glasses, for protecting eyes, and bifocal glasses, for correcting vision. Safety glasses with bifocal is a kind of glasses with innovative performance, and it is of various types, such as the anti-fog bifocal glasses, UV protection bifocal glasses, scratch proof bifocal glasses, and shock proof bifocal glasses, etc. (more…)
As the name indicates, bifocal reading glasses are glasses with two distinct optical powers. These glasses are usually prescribed for presbyopic individuals who also need a correction for myopia or astigmatism. Being popular nowadays, bifocal reading glasses can be dated back to around 1760, when the America statesman and investor Benjamin Franklin first developed them. Suffering presbyopia and nearsightedness, the great man thought it was really inconvenient to switch between two pairs of prescription glasses. Even if there are still serious historians suggesting that there were others who had preceded Franklin in the invention of bifocal reading glasses, Franklin is certainly among the first to wear bifocal glasses. (more…)
I am not aware of the fact that I am getting old until one day I woke up to find things became blur in short distances, then I knew it was time to buy a pair of bifocal reading glasses, a kind of glasses specially designed to people who have presbyopia. However, after searching both in local optical stores and on Internet, I find it is hard for me to decide which type of glasses I should buy: plastic frame bifocal glasses or wire frame bifocal glasses? Finally it is one of my colleagues who suggests me to buy plastic frame bifocal reading glasses, for the reasons that: (more…)
