For your safety we have invested in a purpose built laser operating theatre. To get the best results from laser eye surgery the laser operating theatre conditions need to be carefully controlled.
Temperature and humidity control are important to achieve consistent rate of removal of corneal tissue (ablation rate). Keeping the air in the theatre clean and free from dust or lint is crucial. Our laser operating theatre has a surgical operating theatre quality air conditioning system.
Zyoptix Treatment Calculator Software
The Zyoptix Treatment Calculator software from Bausch & Lomb Surgical takes the information generated by the Orbscan llz and Zywave to generate the unique personalised treatment for your eyes. Three treatment personalised options are available:
These are personalised (customised) excimer laser treatments based upon wavefront analysis of your eye using the Bausch & Lomb Zywave aberrometer. They are designed to correct not just the myopia, hyperopia and astigmatism of the eye (lower-order optical aberrations), but also to correct the finer focusing problems of the human eye that can affect the quality of your vision (higher-order optical aberrations).
Zyoptix Wavefront-Guided treatments also incorporate iris recognition technology. By recognising the unique pattern of the iris of your eye on the Zywave and then again on the Zyoptix 100 excimer laser, the treatment pattern can be perfectly aligned to your eye. This is particularly useful in eyes with higher amounts of astigmatism.
Explaining the difference in wavefront between a perfectly focused eye and an eye with optical aberrations.
An eye that is perfectly focused has no lower or higher order aberrations. Reflected light rays will emerge from the eye as a plane wavefront, or a straight line. However, if the eye has optical aberrations, the wavefront will not be a straight line. The resulting wavefront will be a unique shape, specific to that eye. It is as specific and unique as a person's fingerprint. Zyoptix Wavefront-Guided treatments are designed to correct the wavefront pattern of your eye.
Aspheric treatments have become our personalised treatment of choice in eyes with low to moderate amounts of myopia and low astigmatism. An aspheric treatment is designed to maintain the ratio of the curvature of the central part of your cornea to the peripheral part of the cornea. Maintaining this ratio prevents or minimises an optical problem called spherical aberration. Most standard excimer laser treatments for myopia can cause spherical aberration as they flatten the curvature of the central cornea much more than the peripheral cornea. Spherical aberration is one of the most common causes of loss of quality of vision in low light situations after excimer laser surgery. Studies have shown that Zyoptix Aspheric Treatments can prevent the eye from suffering the degradation of visual quality caused by spherical aberration.
These treatments are designed to remove the minimum amount of corneal tissue for any given correction and diameter of treatment. They are the least “tissue-hungry” treatments available and are personalised to the curvature of your cornea.
Each High Definition LASIK ® treatment requires using a Zycard. The Zycard contains lenses made from quartz and has a smart chip on it. The Zycard converts the 2mm flat-top beam to either a 2mm rounded (Gaussian) profile beam or to a 1mm rounded (Gaussian) profile beam used to do the fine, precise tissue removal.