| 1. How is GT2 unique and different from other progressive
lenses? |
| |
GT2
represents a new technology based on the success of Gradal
Top. GT2 offers your patients a larger reading area, wider
distance vision and clarity in every direction. All of
this is packed into a lens with a minimum seg height of
17mm, which fits today’s fashion frames.
|
| 2. Why do computer users need specific corrective lenses
like “Computer eyes”? |
| |
When
a patient sits in front of the computer with their everyday
progressives, they are looking at an intermediate area
about 2 feet away, but looking through the distance area
of their lenses. Of course, the computer is not clear.
The patient tries to lift their chin to gain clarity through
the middle part of their progressives. Computer eyes lenses
put their intermediate vision on the top of the lens,
rather than the middle. Now their vision is clear straight
ahead, without having to raise their chin.
|
| 3. Why is the Seg Height measurement the same for the right and left lens for bifocals, but not always for progressive
lenses? |
| |
The
seg height for bifocals is put at the same level so that
the lenses look more cosmetically appealing. Progressive
lenses are custom fit for the right and left eye. Therefore,
Monocular PDs and Seg Heights can be different for each
eye
|
| 4. What are the steps for measuring prescribed prism in progressive lenses? |
| |
In
order to measure for prescribed prism lenses must be marked-up
on the proper Centration Chart for the lenses to be checked.
After the markings are verified, place the frame/lens
on the lensometer and dot the optical center of one lens.
Without moving the lensometer pad, move to the other lens
and calculate the amount of prism in the screen.
|
| 5. How does Anti-Reflection Coating improve a patient’s
vision? |
| |
When
a patient is not wearing an AR Coating, a great deal of
light is reflected off their lenses, or back onto the
eye. This means that less light is entering the eye. Once
an AR Coating has been applied, more light is able to
pass through the lens and reach the eye. More light equates
more clarity of vision.
|
