FAQs
Wavefront-Guided Technology and Corection
1) What are the components of the Ophthonix wavefront-guided correction solution?
The Ophthonix wavefront-guided vision correction solution is comprised of three proprietary technology platforms:
- The Z-View® Aberrometer - a highly accurate wavefront-guided refractor which separately measures sphere, cylinder and axis and, high order (3rd -6th order) aberrations of the eye. The refraction takes approximately one minute.
- The total prescription - proprietary technology translates the measurements from the Z-View Aberrometer into a customized prescription. An optical map or "Eyeprint" identifies the unique microscopic irregularities of each eye. The prescription is digitally embedded in a bar code and sent to Ophthonix.
- iZon Wavefront-Guided Lenses - Ophthonix uses its patented iZonik™ material and proprietary design to produce the first ever customized wavefront-guided spectacle lenses. iZon Wavefront-Guided Lenses are manufactured on a point for point basis (similar to the manner in which a CD is programmed) to match a patient's Eyeprint.
2) I thought wavefront correction was only being used in surgical procedures?
Until recently, wavefront technology and correction was used almost exclusively in surgical procedures, most commonly LASIK. But now, for the first time, wavefront technology is being used to prescribe iZon Lenses.
3) How is wavefront correction used by dispensing practitioners?
Wavefront technology is used to analyze the way light travels through the eye. A painless, invisible and completely safe laser light is beamed into the back of the eye, retina, and reflected back out. Paths taken by light rays traveling through the eye provide a three dimensional optical map of the eye. This wavefront mapping helps practitioners detect aberrations, not seen in conventional vision tests that impact the quality of a patient's vision.
4) How does wavefront technology used by other spectacle lens and contact lens companies differ from the Ophthonix proposition?
Many corrective lenses cause distortion of light as it passes through the lens diminishing visual acuity. Progressive Addition Lenses, in particular, due the nature of their design, are noted to deform light waves. Recently, wavefront technology has been used in new lens designs and manufacturing processes to correct these lens aberrations and improve visual performance. This is not true wavefront correction of the eye.
Z-View Aberrometer
1) How can the Z-View Aberrometer benefit my practice?
The Z-View Aberrometer will assist you in arriving at a patient's optimized prescription in about one minute. This will improve your office through-put while allowing you additional time to spend with patients addressing other aspects of the examination, the importance of regular exams and eye health guidelines. Because it captures both low and high order measurements of the eye, the Z-View provides important insight in helping the practitioner address "soft refractions". And, very importantly, the Z-View Aberrometer is the enabling technology for iZon Wavefront-Guided Lenses, which will allow you to deliver the most precise vision correction available today.
2) How can my patients benefit from an exam conducted with the Z-View Aberrometer?
The Z-View Aberrometer provides a comprehensive customized prescription in approximately one minute. It eliminates subjective patient input ensuring a highly precise prescription. Because it is a non-verbal, objective vision screening process it makes screening children and those easily frustrated by a manual exam much more effective.
3) Do I need to purchase the Z-View Aberrometer to prescribe the iZon Wavefront-Guided Lenses?
Yes. The Z-View Aberrometer, measures both sphere, cylinder and axis and separately measures high order aberrations of the eye which are used to create the customized prescription. The Z-View exam and customized prescription are the enabling technologies required to manufacture iZon Wavefront-Guided Lenses.
4) Is the Z-View Aberrometer available in my area?
Ophthonix is currently accepting orders for the Z-View Aberrometer nationwide. Please contact us at sales@opththonix.com for more information.
5) What is the price of the Z-View Aberrometer?
The Z-View Aberrometer was designed specifically for dispensing practitioners. It performs like a high-end surgical aberrometer at a fraction of the cost. Please contact sales@opththonix.com for more information and a price quote.
6) How much space is required for the installation of the Z-View Aberrometer?
The Z-View Aberrometer is a compact flexible instrument that easily adapts in the examination lane or pre-test room with manifest refraction. It measures 12" x 24" and weighs just 30 pounds.
7) How does the Z-View Aberrometer compare with other leading wavefront brands?
The Z-View utilizes a patented holographic grating design which is distinctive from those of competitive models, including Hartmann-Shack, Tscherring, Ray Tracing and Spacial Skiascopy designs. The holographic grating design provides over 11,300 points of resolution across each pupil, compared to 200-1,500 for competitive models. This level of precision is required in the production of the customized iZon Wavefront-Guided Spectacle Lens. The Z-View Aberrometer also is the only aberrometer designed specifically to prescribe wavefront-guided lenses.
8) How long does it take someone to learn to use the Z-View Aberrometer?
Our experience indicates that, on average, it will take no more than 30 minutes to learn to use the Z-View and most often much less.
9) What are the high order measurements you include and what bearing do they have on conducting a refraction? Why are they important?
We address the 3rd -6th high order aberrations - coma and trefoil, spherical aberration and quadrefoil, distortion and increasing levels of astigmatism—which represent about 20% of a patients' correction. Addressing high order as well as low order will enable a patient to achieve the peak of their vision capability, potentially reaching visual acuity of 20/10.
10) Can't any wavefront instrument be used to prescribe the Ophthonix iZon Lens?
No. The Z-View produces a standardized, accurate and repeatable approach to providing the measurements Ophthonix requires to manufacture the iZon Lens—thereby ensuring maximum lens quality. Included in the Z-View software is a proprietary algorithm, algiZon®, which automatically profiles patients based upon their high order measurements and identifies if they are "good candidates for the iZon Lens".
FAQs - iZon Lenses
iZon Wavefront-Guided Lenses
1) How do iZon Wavefront-Guided Lenses differ from other high performance lenses on the market?
iZon Lenses are the only lenses on the market that are fully customized and include the wavefront measurements of the eye itself. They are produced from the unique wavefront map and correct for high order aberrations (3rd-6th order) of the eye.
2) What is the difference between iZon Wavefront-Guided Eyeglasses and other wavefront glasses I have heard about?
iZon Wavefront-Guided Eyeglasses are the only glasses that correct for both high order and low order aberrations of the eye. High order aberrations of the eye cause the lack of crispness and clarity of vision. iZon Eyeglasses are based upon measurements of both high order and low order, making them the only lens that corrects the lack of clarity in vision.
3) Which high orders are you actually measuring and correcting?
Ophthonix is measuring from the 3rd to the 6th level of the Zernike Polynomial chart. But more importantly, the Ophthonix solution is a customized solution and addresses what the patient actually needs in order to receive fully optimized vision.
4) Is the iZon Lens only about high order correction?
No. The Ophthonix Lens will optimize 2nd order as well as correcting high order (3rd-6th order).
5) Are iZon Wavefront-Guided Lenses available in spectacles as well as contact lenses?
Initially, iZon Lenses are available as single vision spectacle lenses. Contact Lenses are in development and targeted for launch this year.
6) How well does the iZon Lens perform?
In multiple double-masked clinicals, iZon Wavefront-Guided Single Vision Lenses tested with a conventional lens as a control, showed a significant improvement in visual acuity, low contrast visual acuity and mid-frequency contrast sensitivity among both myopes and emmetropes. In patient preference clinicals—also double-masked with a conventional lens as a control—patients identified as iZon candidates preferred the iZon Lens 3:1 over the conventional lens. Additionally, in market research with patients who purchased the iZon Lens from their Eye Care Practitioner, better than nine out of ten report a high level of satisfaction with the overall performance.
7) What are the functional vision benefits with iZon Lenses?
iZon Wavefront-Guided Lenses have been proven to improve nighttime driving performance. Under FDA validated simulated nighttime driving tests, iZon Lens wearers improved driving reaction by three-tenths of a second and 35 feet.
8) Are these improvements in nighttime driving performance significant?
Yes. Several years ago, it was Federally mandated that all new vehicles in the U.S. include a third brake light in the back window because it improved driver reaction time by .35 seconds. iZon Lenses improve driver reaction by another .30 seconds.
iZon Lenses wearers were also able to detect, recognize and react to a potential hazard in the road thirty-five feet sooner. That's approximately the distance across an intersection or more than two car lengths.
9) Why do iZon Lenses allow wearers to see better when driving at night?
iZon Lenses are the only lenses that correct for the unique aberrations of the eye that cause vision problems such as glare, starbursts, comets and other light distortions. They improve visual acuity, low contrast visual acuity and contrast sensitivity.
10) Are the lenses as effective during the day as they are at night?
Absolutely. iZon Lenses give wearers High-Definition vision day and night. Wearers say their vision is sharper, clearer, more vivid and, they see with greater depth and dimension both during the day and at night.
11) Will optical labs produce the iZon Lens?
Initially to ensure highest quality, Ophthonix will manufacture all Lens orders.
12) Are there specific frame requirements for the iZon Eyeglasses?
iZon Lenses fit most modern style frames and can be drill mounted.
13) Do iZon Lenses come with AR coatings?
Yes. The iZon Lens is 1.6 index with anti-reflective, UV-Blocking, scratch resistant and hydrophobic coatings.
14) When will iZon Wavefront-Guided Lenses be available in my area?
Many patients are already enjoying the benefits of High-Definition vision from their iZon Eyeglasses. Please contact sales@opththonix.com regarding availability in your area.
iZon Lenses - Single Vision
1) What is the typical patient profile for iZon Wavefront-Guided Lenses?
Ideal patients are typically adults benefiting from single vision correction who wear glasses as their primary form of vision correction, are contact lens wearers and also have a need for glasses, are new to vision correction or are emmetropes with high order aberrations.
Additionally, patients who feel challenged when driving at night, have problems seeing in low light conditions, have contrast sensitivity problems and/or color contrast problems may be excellent candidates.
2) How does a practitioner determine if a patient should be prescribed to wear iZon Eyeglasses?
Included in the Z-View software is a proprietary algorithm, algiZon®, which automatically profiles patients based upon their high order measurements and identifies if they are "good candidates for the iZon Lens". Approximately 50% of a typical practice base will fit this profile.
3) What happens when a patient's gaze angle shifts when wearing the iZon Eyeglasses?
iZon Glasses include exactly the wavefront information that is required for each and every patient. Furthermore, the design is optimized over the entirety of the lens. As a result, there is not detrimental effect as the gaze angle shifts.
High-Definition vision
1) What is High-Definition vision?
High-Definition vision is a term iZon wearers have used to describe their experience. iZon Lenses deliver customized and optimized vision; that means clearer, sharper, more vivid vision than was ever before possible.
More than simply improving visual acuity, iZon Lenses improve the quality of vision. As a practitioner you are well aware that there is a broad range of quality in patients' vision when corrected to 20/20. This is largely due to the inability of conventional lenses to correct high order aberrations.
