Re: pupil dilation & halos on bright lights


Mike Tyner wrote:
> "Kyle" <kyletaylorny@xxxxxxxxx> wrote
>
> > Know what is the aberrations called. I am a telescope hobbyists.
> > I know about spherical abberations, coma, astigmatism, turned
> > down edge, glass roughness. I wonder what could be the
> > equivalent in the cornea. Any idea?
>
> Yes. The first 3 problems you described are part of every optical system,
> living or manufactured.
>
> Wavefront / flying spot laser techniques allow surgeons to correct for the
> principal aberrations (spherical and coma) as well as sphere power and
> astigmatism.
>
> Look up the term "Zernicke polynomial" for a description of the math used to
> describe these aberrations.
>
> -MT

I'm inquiring what kind of abberations are concentrated in the
surrounding
cornea in widely dilated pupils (surrounding the normal maximum opening

which are not used in normal seeing)

Kyle

.

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