Spherical aberration and glare disability with intraocular lenses of different optical design

We implanted several kinds of intraocular lenses (IOLs), calculated the spherical aberration using a computed ray-tracing system, and investigated the correlation between glare disability and spherical aberration and the difference in glare disability among the different IOL types. Type A IOLs (convex-plano), except for those with high power, had the smallest spherical aberration. Type B IOLs (biconvex, anterior more curved) had the smallest spherical aberration at high power. Type D IOLs (biconvex, posterior more curved) had the largest spherical aberration. The correlation between glare disability and spherical aberration was statistically significant for types A, B and C (equiconvex) IOLs. There was no correlation between glare disability and spherical aberration for Type D IOLs, although they showed the smallest glare disability of the four types. These results indicate that the spherical aberration of an IOL, which is calculated by an optical design program, may be a good criterion for selecting an IOL design.