Guide to Contact Lenses
- Designs of multifocal contact lenses
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People in mid-ages are more active than their counterparts several decades ago. A large number of people above 40 still participate in biking, jogging, exercising and playing sports regularly. Presbyopia is quite common among people above 40, so that multifocal lenses are needed. But for these active sports, multifocal eyeglasses are inconvenient.
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- Progression of bifocal and trifocal lenses
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Eyeglass lenses have advanced to offer more options for various vision problems. One convincing example is the invention and progression of multifocal lenses for presbyopia correction.
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- Regular and task-specific occupational multifocal glasses
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Technological improvement of eyeglass lenses has brought much more options to customers. The period in which people with presbyopia were forced to wear the Franklin style bifocal lenses with visible lines across the lens has gone forever. Currently, new types of multifocal lenses are available, not to say various specialty eyeglasses such as computer glasses exclusively for intermediate vision.
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- Advantages and types of progressive lenses
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Progressive lenses for presbyopia have some advantages over traditional bifocal lenses and trifocals, all of which belong to multifocal lenses. There are no visible lines on progressive lenses, which attract certain group of people in their 40s who care deeply about their appearances. Furthermore, progressive lenses provide clear and comfortable vision at all distance including intermediate zone that is beyond bifocal lenses.
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