Progressive reading glasses or no-line bifocal glasses are really advanced enough that many individuals have chosen to replace those traditional bifocal or trifocal reading glasses with progressive ones. There are common advantages of progressive lenses. Its name reflects that there is a gradient of powers in a lens, providing smooth and seamless vision correction at several distances. Compared with lined bifocal or trifocal lenses, progressive lenses never cause “image jump”. Users of traditional bifocal or trifocal glasses usually experience image jump because of the separated zones in a lens. Another widely reported advantage of progressive lenses is that they have no visible line on them. Wearers can get more natural look by wearing these lenses without a line. All these benefits are true, which explain the popularity of those progressive lenses in the modern times. However, customers still need to consider other factors that may be still decisive. One of them is the price. Progressive lenses are often much more expensive than regular eyeglass lenses and bifocal and trifocal lenses. For most folks, it is necessary to purchase discount progressive glasses.
It is reasonable that those advanced progressive glasses are made using great technologies. Just think that those designers should incorporate a gradient of powers into a single lens. Most of regular eyeglass lenses have only one power. Even a bifocal or trifocal lens has only two or three focal points. But a progressive lens has a couple of focal points, which surely require more time for production. Both advanced technologies and workman time contribute to the high prices of progressive reading glasses. But these superior lenses should also be affordable by most of the ordinary individuals. Choosing discount progressive glasses is a good choice.
Similar to bifocal and trifocal reading glasses, progressive glasses still require the wearers to sight through the appropriate part of the vertical progression of power. In most cases, the near vision part on a lens is at the bottom and the distance section is at the top of the lens. As a result, it is sometimes necessary for a user to tilt his or her head in order to adjust the additional lens power. It is necessary to look down through the lenses during nearby tasks and look up the lenses for distance objects. Performing computer tasks, it is simple to look ahead. Progressive glasses are easy for use and they require only a little time to adjust. All people can enjoy those discount progressive glasses.