There is no need to switch lenses following the focusing distance both far and near can be seen with one single lens.
These lenses for the lifestyles of modern people provide comfortable vision in environments such as those in the home and the office as they are designed exclusively for indoor use.
These lenses provide the widest and clearest vision among lenses for senior citizens when viewing medium-range-positioned objects.
(Note) It is recommended that these lenses are used together with eyeglasses for both near and far distances because they do not provide sufficient vision at far and intermediate distances.
Vision is clear at both near and far distances because transitions in sight can be made without seeing through distortions and sways.
Like wide-vision lenses for reading, these are lenses for seeing the area in front of you, but the range of vision is narrow.