What is wavefront, and is it better than conventional laser eye surgery?
Wavefront measures the unique imperfections of the surface of your eye, called ‘higher order aberrations’. These irregularities of your cornea and optical system affect the finer quality aspects of your vision, beyond the normal refractive errors of short-sightedness, long-sightedness, and astigmatism. A wavefront aberrometer records data from several spots on the surface of your cornea. This produces a map of the imperfections on the surface of your cornea, as well as a visual system analysis that we feed into the laser to achieve better results. The laser must be able to receive these measurements and then apply them directly onto the cornea. Different analysers measure different numbers of spots, ranging from as low as 60 to as high as 650. The Zeiss WASCA in use at London Vision Clinic has a resolution of 650. A low-resolution analyser is like a watercolour painting. It provides a general impression of the landscape. It measures just a few points and then uses a mathematical formul
