Wavefront CorrectionFAQs
Wavefront-Guided Technology and Correction
1) What are the components of the Ophthonix wavefront-guided solution?
The Ophthonix solution is comprised of three proprietary technology platforms
to produce iZon® High Resolution Lenses:
- The Z-View® Aberrometer - a highly accurate wavefront refractor, which measures all 2nd-6th order aberrations of the eye that are in the optical fingerprint, or iPrint™. The refraction takes approximately one minute.
- The unique mathematical algorithm translates the iPrint into individualized, customized wavefront prescriptions.
- The iZon Lens is a unique 3-layer composition. It addresses the vision problems associated with higher order aberrations. A second sophisticated mathematical algorithm defines the back surface of the lens. The total lens structure also reduces chromatic aberrations of the lens.
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 analyze the eye and 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 can impact the quality of a patient's vision.
4) How does wavefront technology used by other spectacle 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
address these lens aberrations. Importantly, the lenses are not based on the iPrint of the eye. Only the iZon Lens is driven by the iPrint.
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 lower and higher 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 High Resolution 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) Is the Z-View Aberrometer required to prescribe iZon® Lenses?
Yes. The Z-View measures 2nd to 6th order aberrations, capturing 17,000
points across a 7 mm pupil. This is utilized in creating the patient’s
iPrint. Only the Z-View contains the algorithm to translate the lower and
higher order measurements into the iPrint. The iPrint is needed to make the
iZon Lens.
4) 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@ophthonix.com for
more information and a price quote.
5) 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.
6) 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 17,000 points of resolution across a 7 mm pupil. This level of precision
is required in the production of the customized iZon High Resolution Spectacle
Lens.
7) 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.
8) What are the higher order measurements you include and what bearing
do they have on conducting a refraction? Why are they important?
We address the 2nd - 6th order aberrations - which
represent about 20% of a patient's correction. Addressing higher order as well
as lower order will enable a patient to achieve the peak of their vision capability.
9) Can I use the Z-View Aberrometer to prescribe a conventional lens?
Yes. However, by doing so, the patient is denied of the benefits from the iPrint,
which incorporates 2nd to 6th order aberrations. The iZon Lens is powered by
the iPrint and addresses the vision problems associated with higher order aberrations.
Additionally, only the iZon Lens reduces chromatic aberration of the lens.
