|
|||
Bifocal Contacts: A Viable Option for Presbyopes
Baby boomers have never wanted to grow old gracefully. Thanks to advances in technology, bifocal and multifocal contact lenses are a viable option for the current generation of presbyopes. Patients in their middle years today take their health care into their own hands. They are more aware of the alternatives that are available for vision correction than the previous generations. Many want to maintain their youthful appearance as long as they can and want to be able to see and be seen without glasses. This market is ripe for multifocals since some may already have tried reading or bifocal glasses or monovision contact lenses and had difficulty adjusting to them. Soft and RGP OptionsA number of design options exist for both soft and rigid lens (RGP) correction. All soft bifocal and multifocal designs are simultaneous vision lenses. That is, they permit light from both near and distance to enter the pupil at the same time. Patients must train their brains to select the desired image and filter out or ignore the unwanted rays of light. Some designs have the distance power in the center, others, the near. Some are progressive, gradually changing from distance to near or near to distance seamlessly, in a manner similar to multifocal glasses; others are concentric, and have either distance or near in the middle, surrounded by one or more rings that contain the correction for the opposite focal length. Alternating Vision |





