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.

Presbyopia is an unavoidable vision problem that bothers people above 40. Some eye doctors think that presbyopia is caused by the stiffening of the lens, while others suspect lens’ continued growth or related muscle atrophy.

There is a recently created solution to presbyopia which is common in people over 40. As usually known, binoculars have the ability to focus the lenses as the wearers need. Now a new type of eyeglasses has also incorporated this focus adjustment feature with the brand name of TruFocals.