Wavefront CorrectionWavefront Correction
Non-surgical Wavefront Correction of the Eye
iZon® High Resolution Lenses are the first non-surgical solution designed to address both lower and higher order aberrations of the eye. Wavefront technology is used to measure and map the optical fingerprint of the eye, or iPrint™. The customized iZon Lens is based on the iPrint and addresses the vision problems associated with the higher order aberrations (2nd-6th) of the eye. Wearers experience overall sharpness of vision, improved contrast acuity, improved nighttime driving vision, and seeing colors with greater richness and intensity.
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 retina at the back of the eye and then 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, which impact the quality of a patient's vision.
Distortions or imperfections in vision caused by higher order aberrations may include:
- Compromised visual acuity
- Halos, starbursts and comets around lights at night
- Compromised depth perception
- Low contrast sensitivity
- Perceptual sensitivity to color
Surgical Wavefront Correction of the Eye
Wavefront technology has been used successfully in LASIK and PRK procedures. LASIK permanently changes the shape of the cornea, and is performed for varying degrees of nearsightedness, farsightedness, and astigmatism. Although many patients enjoy the benefits of no longer being dependent on glasses or contact lenses, there are risks involved in this procedure. Those may include: over or under correction; the inability to wear contact lenses; permanent loss of vision and the reduction in the quality of vision. Post-LASIK patients also complain about increased glare, halos and starbursts; difficulty with nighttime driving; and reduced vision in dim lighting conditions.
Wavefront Correction of the Lens
Many corrective lenses cause distortions of light as it passes through the lens, which diminishes visual acuity. Progressive Addition Lenses, in particular, due to 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 wavefront correction of the eye.
