Progressive Bifocal Reading Glasses and Peripheral Aberrations Associated


Presbyopia patients always expect more visual enjoyment from progressive bifocal reading glasses, trifocals or bifocal glasses as compared with traditional reading glasses. The seeing difficulty caused by presbyopia will continue to bother a lot of people and has bothered, especially the elderly.

Nearly all presbyopic patients get the wanted visual aids and can wear progressive glasses successfully with today's bifocal lens manufacturing and designs techniques.

In near, distance and intermediate ranges an appropriate pair of progressive reading glasses will provide visual help. Ranging from several minutes to a couple of days but with a pair of progressive glasses need an adaption period another point is that nearly all patients who are firstly fitted.

By a new user this adaption period is needed because as compared to from bifocal or trifocal lenses progressive lenses have a completely different design. For presbyopic individuals to see clearly at all distances, it is absolutely true that progressive have been developed with blending lens powers.

But it is also a fact that minor aberrations in the peripheral part by the progressive lenses. In this case, when a new user glances to the far right to left progressive bifocal reading glasses may cause blurriness. When the wearer sees through progressive lenses' peripheral zones it is easier to understand that blurry vision will occur.



In addition, if a wearer makes quick head movements a sensation of "swim" may be experienced. This can be quite uncomfortable. Furthermore, during this adaption period patients with a large amount of presbyopia will even get dizziness or headache. And to get them adapted to computer progressives lenses these need more time.

During the adaption period of using progressive bifocal reading glasses, it is advisable for new users to make slow and slight head movements and look more directly at objects. When the problems resulted from peripheral vision disappear most of the patients can get used to progressive reading glasses.

Because of minor aberrations in the peripheral lens part, to experience a period of adaption, progressive bifocal reading glasses may require news users. During this period, these people are advised to make slight head movements.

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