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Making Contact









             on the non-dominant eye. Depending  independent of pupil size change  surround to allow for the visual
             on the lens design, flux density on the   and lens decentration, as in the  benefits of a rigid lens with the comfort
             concentric zones, distance refraction,   SEED®1dayPure and the SynergEyes iD  of a soft contact lens. The SynergEyes iD
             the amount of near correction and the   Multifocal EDOF®.           MF  EDOF®  also  utilizes  higher-order
             pupil size with its inherent spherical                              aberrations to produce an elongated
             aberration, the resultant visual   The NaturalVue® Multifocal 1 Day   depth of focus like the SEED®. There
             compromises can manifest as decreased  (Visioneering Technology) contact lens  is no diagnostic fit set as the lens is

             brightness, haloes, ghosting, reduced  uses the company’s Neurofocus Optics®  empirically ordered and individually
             visual acuity and decreased contrast  EDOF technology. It is a distance-centre   fitted with the following parameters:

             sensitivity.                      lens in a zonal design. It has a small  Keratometry readings, HVID and
                                               central optic zone surrounded by large  Refraction.
             The power distribution across the optic  plus-power zones up to +3.00D. This
             zone  radius  in  the  annular  designs  is   creates a virtual or optical/pinhole   There are many options available for
             periodic (wide square waves), while, in  aperture that allows the visual cortex to  correction of presbyopia with soft
             the  aspheric designs, it  is monotonic  figure out the plus from the periphery  MFCLs.  Trying  a combination or a
             (constant  slope).  In  contrast,  EDOF   it needs to extend  the  depth of  focus.  mixture of the different design
             designs intentionally use and manipulate  The lens is also good for young patients  concepts may be necessary before patients

             combinations of several higher-order  with accommodation and binocular   are happy with their vision correction

             aberrations on the front surface of the  vision dysfunctions, as well as for  solution. The latest EDOF design is


             lens to give a unique refractive power  myopia control.             a valuable tool that can help to fill the
             profile that is continuous and rapidly                              potentially unmet needs of the growing

             varying or non-monotonic, non-aspheric,  The SynergEyes iD Multifocal EDOF®  and under-serviced population of
             aperiodic and non-diffractive across  (SynergEyes) is a hybrid lens that   presbyopic patients who want to see

             the  optic zone diameter. The  resultant  combines a rigid gas permeable centre   well  at  varying  distances  without

             increase in the depth of focus is  with a precision linear soft SiHy skirt   compromising visual performance.   l
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