Prescription Glasses

People with much knowledge of reading glasses and its variations may have heard of the basic point that bifocal reading glasses progressive is superior to those traditional bifocal reading spectacles or trifocal ones. After more than two hundred years progression, bifocal reading glasses as well as other variations have formed an integrated group for presbyopia correction. It is true that eyeglasses equipped with progressive lenses are usually called progressive eyeglasses. But another name is no line bifocal reading glasses. Another similar type of eyeglasses is called trifocal reading glasses. There have been claimed a lot of differences among these three types of reading spectacles. However, it is feasible to differentiate one from another in accordance to their functionalities, which originate from varying lens designs. This article pays exclusive attention to these different lens designs. (more…)

Also called no line bifocals, progressive reading glasses have long been enjoyed by the needed. Those regular users of progressive eyeglasses have certainly known the benefits they can get. For instance, progressive spectacles never cause image jump, which happens frequently to bifocal or trifocal eyeglass wearers. Since progressive eyeglasses use lenses with a gradient of increasing lens power, a significantly smoother power transition will be offered. It is reasonable to claim that those no line bifocal reading glasses have made a noticeable improvement, compared with those traditional bifocal reading glasses. Most historians or scientists have reached an acknowledgement that the first pair of bifocal spectacles was created by Benjamin Franklin in around 1784. However, few people know the exact origin of the progressive addition lenses. (more…)

Present now, hi-tech progressive lens glasses are gaining popularity. The background is that presbyopia makes it a necessity to wear multifocal prescription eyeglasses. It can be quite bothersome for the majority of presbyopic patients to make switches between two pairs of prescription glasses for nearsightedness and presbyopia respectively. Most of those individuals would like to use reading glasses only in office or at home during long terms of materials reading. When they are forced to change focusing ranges, from the near to the distant or vice versa, two different pairs of prescription glasses will lead to solely inconvenience. The great US founder Benjamin Franklin first invented bifocal eyeglasses which were used to eliminate such an inconvenience. A pair of bifocal spectacles can offer both near and distance corrected vision. It is no longer needed to change different pairs. (more…)

Progressive eyeglasses differ from traditional reading glasses, bifocals or trifocals in lens design. While those three types provide one to three lens powers in a single lens, progressive spectacles incorporate a set of different powers in their lenses. The majority of presbyopic patients may have known this functional difference between other forms of multifocal reading glasses and progressive glasses. However, there may be fewer people know that progressive glasses frames can also differ from the frames of other reading glasses. This saying is well founded. In fact, even progressive glasses users want to wear attractive frames with fashionable styles. And progressive eyeglass frames manufacturers should consider all traditional factors that are involved in regular types of glasses. (more…)