OPTICAL ABERRATIONS AND WAVEFRONT

The deviation of light to create normal retinal image in the optical system is called aberration.Aberrations are divided two subgroup: low-order aberrations (defocus: spherical and cylindrical refractive errors) Magnetic products and high-order aberrations (coma, spherical, trefoil, tetrafoil, quadrifoil, pentafoil, secondary astigmatism).Aberratio