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Choosing the right Treatment
 Your eye and vision are like your fingerprint – truly distinctive and personal. It is distinctive because light is scattered unevenly to form a pattern that is unique to your eye and because your cornea has a unique shape. Each Zyoptix assessment involves an extra diagnostic (screening) process extensive enough to let the surgeon see every eye's unique optical characteristics.
With a Zyoptix assessment, you can rest assured that your surgeon now has an even broader base of information on which to decide whether your eyes are suitable for treatment, and to plan the right treatment for you.
How Zyoptix works
 Zyoptix software combines data from two different types of diagnostic equipment, then programmes the laser with your unique treatment, based on this data. Data is collected to assess the structure of your cornea (called topography). Data is also collected from a measurement of your optical system using the advanced wavefront technology - a measurement not normally taken with Standard LASIK treatments.
The next sections will explain how the topographer and wavefront work together to ensure the most thorough screening and treatment programme.
The wavefront factor: measuring your vision
Wavefront was first developed by astrophysicists and has now been applied to Zyoptix. It provides the most technologically advanced measurement not just of standard visual but also of scattered light errors known as 'aberrations'.
Wavefront technology or aberrometry is based on the principle that if an eye had no imperfections at all, light passed through it would not scatter. But because no eye is perfect, light scatters to form distinct patterns - called a wavefront. Wavefront technology measures your personal/individual patterns and thus allows the surgeon to plan a treatment that exactly matches individual vision errors.
Your wavefront will be measured by the market-leading aberrometer, the Zywave™ Aberrometer from Bausch & Lomb. The Zywave™ aberrometer measures the eye from the centre to the outer edges (the periphery) of the pupil. This is especially important, because at night your pupils open up and more light is scattered in the periphery of the pupils.
Your surgeon needs to know as much about your night-time as your day-time vision.
Zyoptix topography: assessing your corneal surface
 While it is important that your surgeon measures your optical system, it is equally important to know the shape of your cornea. This screening test enables the surgeon to assess the general health and thickness of your cornea and so to determine if you are suitable for laser eye treatment.
The Zyoptix system collects this information from over 9,000 points across the cornea, using Bausch & Lomb’s Orbscan® IIz (anterior segment analysis system) market-leading topographer. |
