What are freeform varifocals?
Freeform varifocal lenses are the most advanced versions of progressive lenses. They are created by computer-driven equipment and are made to suit each individual specification. These lenses are called “back-surface lenses” because of the technology used to create them.
What are freeform lenses?
Free Form Lenses: Free form lenses are digitally made using software that calculates a person’s prescription along with many other factors such as pantoscopic tilt and frame fitting position. This allows them to be customized to each individual patient, rather than using a premolded lens.
Are free form lenses worth it?
In addition to the improved visual clarity that customized free-form lenses provide, you can expect: Exceptional night/low light vision: Free-form lenses can reduce glare and halo effects caused by light sources at night, such as car headlights. Exceptional contrast perception: Free-form lenses can sharpen vision.
Can you have rimless varifocals?
Varifocal Rimless Glasses For Men & Women.
How are freeform lenses made?
Basically, free-form consists of three separate but totally dependent parts—a lens design, a software program, and very specific processing equipment. All lenses designed with digital free-form technology are effectively “optimized” because they can be precisely generated to a power of 0.01D.
What is the difference between digital and freeform lenses?
Traditional lenses are surfaced on 1 side and patient’s best vision is in the center of the lens. Digital lenses are surfaced on both sides and often called free-form because the lens is customized to the patient’s prescription in a very precise manner.
What is freeform bifocal?
CrossbowsRX freeform enables the production of finished progressive, bifocal & advanced single vision lenses from simple spherical semi-finished blanks. Our market leading freeform range has a lens design to meet your patients’ individual requirements and is tailored to your patients’ prescription.
What is freeform design?
Freeform simply is a manufacturing process that allows the production of complex surfaces and designs with extreme precision. The conventional method. The conventional lens surfacing process cannot produce the complex surface required for a progressive power lens (PPL).
Why are my varifocals blurry?
If you feel that your vision has changed, it could be because your frame is out of alignment. This is particularly true of varifocals – if they are not sitting correctly, you could be looking through the wrong part of the lens, and your vision will seem blurry.
What is the difference between digital and freeform progressive lenses?
Free form digital progressive lenses are called Free form because they can be fully customized. New Digital Free form Progressive Lenses are made using the digital ray path technology software which allows us to manufacture a lens that is precise up to 0.0001 diopters.