The conveniences of bifocal contact lens
Article Tags: bifocal contact lens
Today, many people are quite familiar with bifocal eyeglasses and bifocal sunglasses. Taking use of bifocal lenses, these eyewear products enable wearers to carry out visual tasks at both near and distance. Making a comparison with traditional single-vision glasses, bifocals are definitely a breakthrough. However, bifocal contact lenses are known by relatively fewer people. Bifocal contacts actually follow the same design principle as bifocal glasses. It is exciting that they are gaining acceptance among contact lens users.
History of bifocal contact lenses
Bifocal contact lenses are relatively a new member in the family of bifocals. For their special designs and features, bifocal contact lenses did not come into being until 1930s. But the initial bifocal contact lenses were not ideal alternates for many people. And many people did not bear very good passion for these newly designed bifocal contact lenses. This is because of the backwardness of technologies and this has caused a lot discomfort to wearers. However, with the development of technologies in bifocals, great achievements have been made in bifocal contact lenses. Especially, since 1982, new technologies have solved all the problems in bifocal contact lenses. Hence bifocal contact lenses have become very popular among the masses. Now many people make bifocal contact lenses as their first choice.
Function and convenience brought by bifocal contacts
Bifocal contact lenses allow wearers to see objects both far and near. Because bifocal contact lenses are the results of very complex designs, wearers can move their eyes freely, either upward or downward. Wherever the eyes moves, some adjustments can be automatically made in bifocal contact lenses. Like bifocal eyeglasses and sunglasses, bifocal contacts do not require intentional head adjustment during a visual focus change, provided the eyes have gotten used to power separation in the lenses.
Some wearers of bifocal contact lens worry whether the prescription can be adjusted with the change of vision. In fact it is no need to worry about that. Bifocal contact lenses can be adjusted at any time with the change of the need of the wearers.
Materials for bifocal contacts
Generally speaking, the materials of bifocal contact lenses can be divided into to two categories: rigid gas permeable and soft toric lenses. Most eye doctors would recommend GP bifocal contacts are better than soft ones. The major reason is that the rigidity of GP contact lenses helps maintain lens shape during eye blinking. Users will more easily get used to power changes. And consumers can also find disposal bifocal contact lenses at the market. These bifocal contact lenses can be replaced at certain intervals.