Eyewear |
High Definition Lenses |
|
NEW High Definition Lenses for Progressive Wearers
Improve your quality of life by advancing your quality of vision.With new High Definition progressive lenses your vision will be clearer, sharper and more brilliant than you ever imagined. Up until recently, progressive lenses could only provide average vision. These new HD Lenses are designed to provide sharper vision in all lighting conditions, increase peripheral vision, improve contrast sensitivity and reduce nighttime glare while driving. The advanced technology is extraordinary because of the lens customization. Crown uses a digital lens surfacing technology which is 25 times more accurate than traditional lens shaping techniques. The process is designed with power changes across the surface of the lens that adjust for the angled view which increases visibility when the wearer is looking off to the side rather than straight through the center of the lens.The customization also takes into consideration the frame size and the position of the wearer’s pupil within the frame outline.Wearing these lenses can be compared to watching TV channels or movies HD (High Definition). Read more about the benefits of Free Form Digital Lenses.High-Definition Lenses May Provide:
Sharper Image Quality
Benefits of a Free Form Digital LensEliminates Distortion The digital lens design is the first to use a perfect sphere on the front surface of the lens. Conventional progressive lens designs place or split the power between the front and back surfaces. This elegantly simple, but complex step eliminates the magnification factors that cause virtually all of the swim and sway distortion found in conventional progressive addition lenses. Wearers experience stable, smooth vision throughout the lens, with no annoying distortion.
Wider Fields of View Advanced software guides the machines used to create a free-form lens. The software calculates the curves required, taking into account the entire prescription-sphere, cylinder, axis, ass power and prism-and creates a “three-dimensional” map which is then processed onto the back surface of the lens. One advantage of this design is that the prescription is closer to the wearer’s eye. This is similar to looking through an antique door lock-the closer your eye gets to the keyhole, the more of the next room you can see. Progressive lens designs are usually described as being harder or softer depending on their design and the features they offer the wearer. A hard design has a more restricted intermediate area, but provides a much wider reading area. A soft design has a wider intermediate area preferred by computer users. The advanced software, back surface designs, and know-how creates a totally new type of progressive lenses. First time wearers are amazed by the clear and stable vision and experienced wearers appreciate the extra-wide visual fields-near, far and in-between.
Optically Precise Rx’s Older progressive lens designs use only a few base curves; each designed to accommodate a wide range of powers. For each base curve, there is only one optimum spherical Rx at the center of its range. Lens optics are compromised by off-center power error and unwanted astigmatism as you move from the one specific optically precise sphere power. Crown Vision Center's lenses are processed from advances materials and do not suffer from those base curve limitations. Instead, toric and progressive surfaces are combines and customized to the exact Rx. The wearer receives a truly customized lens with an exact prescription in each area of the lens patient accommodation is automatic, as each lens is truly prescription-specific. Are You a Candidate for High-Definition Lenses?Virtually anyone who wears progressive eyeglasses is a good candidate for high-definition lenses, though individuals with higher eyeglass prescriptions may notice greater benefits than people with only mild prescriptions. Schedule your appointment today and ask your Crown Vision Center optician if you are a good candiate. |





Nighttime Glare Reduction
The intermediate corridor in a internal free-form kens is up to 35% wider than other progressive lens designs. 

