If you are an older individual who frequently spends a lot of time outdoors and regularly wears multifocal lenses, you might want to switch to single-lens eyeglasses for outdoor wear. While multifocal glasses (bifocals, trifocals, and progressives) are well-suited to tasks that require frequent adjustments of focus from distance to near, they may not be the best choice for walking outdoors. The problem is that outdoor terrain is often uneven, which leads to blurred vision with multifocal lenses as attention is focused on the ground. For instance, wearers of multifocal-lens glasses often become disoriented as they look downward while climbing stairs. To avoid falls, a switch to single-focus lens is recommended while outdoors. Clear vision helps people enjoy life and maintain their independence and activity level. According to one study, older adults who switched to single-lens glasses from multifocal glasses for outside use reduced their incidence of falls by 40%. Clear vision helps people enjoy life and maintain their independence and activity level.