Advantages of progressive eye glasses
A
convincing testimony to the technological improvements in the eyewear
industry is that progressive
eye glasses succeeded well the traditional bifocal reading glasses
and trifocal glasses. As a later comer, progressive glasses are supposed
to offer more benefits associated with visual correction. This is
absolutely true. The inventors of progressive eyeglass lenses did this
work just with clear mind of making progression. Compared with
conventional bifocal reading glasses or trifocal eyeglasses, progressive
spectacles do have some advantages which are brought by the unique and
complicated lens design. The most noticeable breakthrough made by
progressive lenses is that a gradient of increasing prescription lowers
could be incorporated into a single lens.
Such a
powerful lens is incomparable. This is because a bifocal lens has a
universal design with only two powers and a trifocal lens only adds an
additional power. Thus, the functionality of vision correction enabled
by progressive eye glasses is also superior to that of either bifocal
glasses or trifocals. It is true that people can get visual aids at
near, intermediate and distance ranges from a pair of trifocal
spectacles. And the extra visual help at the intermediate zone marks the
difference between bifocals and trifocals. However, objects within all
distances can be controlled by a pair of progressive spectacles.
Compared with bifocals and trifocals, progressive reading glasses come
with a smoother power transition.
Another
advantage of progressive
eye glasses is old-age-related. Both bifocal and trifocal reading
glasses are obviously associated with “old age” because they have
visible segments or lines on the lens surface. Progressive lenses have
never these “age-telling” lines or segments. For a certain group of
people especially female ones, it is unpleasant to let others know their
age. In this case, progressive eyeglasses are more cosmetically
attractive. Most wearers can adjust to the additional lens power by
tilting the head to sight through the appropriate part of the vertical
progression.
C: Progressive eye glasses as a later comer have some valuable advantages over traditional bifocal reading glasses and trifocals. They provide a smoother power transition and more cosmetically attractive look.