Prescription Changes with Implant Vision Correction
Why is astigmatism important in refractive lens exchange and customised cataract surgery ?
Because it is a very important predictor of how good the unaided eyesight will be. The lower the astigmatism value the better the unaided eyesight will be in general. With specialised customised techniques and with toric lens implants the degree of astigmatism can be controlled to a high degree as can be seen in the results below.
The results below are assessed using RMS values which take into account the magnitude of the astigmatism more accurately than with simple averaging methods.
|Pre operative Astigmatism (Dioptres)||Post operative astigmatism (dioptres)|
|Average Spectacle Value||0.90||0|