In recent years, progressive spectacles have gained much popularity among both the celebrities and the ordinary people. A few years ago, most people suffering from presbyopic and having difficulty in seeing close things had to use traditional reading glasses, bifocals or trifocals. The emergence of progressive lenses made it possible to have another option. Compared with traditional forms of reading glasses, progressive reading glasses have made a breakthrough by removing the unpleasant lines on the lens and providing comfortable power transition. This can be considered as the decisive factor of progressive glasses’ current customer acceptance in the market. It is true that progressive eyeglasses are now the most widely purchased devices for correcting presbyopia.
Another factor that contributes to the progressive spectacles’ current popularity is lens technological improvement. Possible skills used to make progressive lenses have realized a significant improvement. In the past, all progressive lenses had to be relatively large, because all powers should be fit within a singe lens. If the frame was not large enough, the reading section of a progressive lens would be extremely small after the lens was cut to size and inserted in the frame. This was absolutely not the wanted effect because reading aid was the basic need. Nowadays, this problem has been overcome by introducing “short corridor” progressive lenses with compact designs, which can provide larger reading zones even being fitted into smaller and fashionable frames.
Another improvement involves the wide availability of specialty progressive spectacles. The problem of how much of the corridor is devoted to various viewing distances is quite critical. Various styles of progressive lenses are not provided by manufacturers who expand different areas of the corridor. This is aimed to offer specific visual needs. For instance, constant computer users can wear progressive eyeglasses with a wider intermediate zone. And individuals reading a lot should choose lenses with a larger reading portion. Patients can get specific advice from an eye care practitioner.
Progressive spectacles are generally superior to conventional reading glasses, bifocals and trifocals. Modern lens technologies have introduced “short corridor” progressive lenses, which can then be inserted in a small frame. There are still various specialty progressive eyeglasses.