Re: can any buddy suggest me how to calculate IOl power in Silicon filled eyes

ani wrote:

HI
Can any optometrist suggest me how to calculate IOLpower in silisocn
filled eyes PLz tell me



You would have to know the refractive index of the IOL for starters. And your question may have no possible answer.

For example if you are using an IOL with the same index or less than that of the silicone oil, the power would be infinitely large, as no matter how strong it is in air, it will have a zero or negative power in a medium of the same index (unless the eye were very long, as in high myopia).

Assuming an IOL of higher index than the oil, you need to know the corneal curvature and the axial length of the eye. From that, ordinary optical formulas will give you a power for the IOL, but remember you must correct for the power in air if the IOL is to be specified as measured in air.

Of course no matter what you do, according to otis, the eye will adapt and emmetropize itself so long as you never put a minus lens in front of it, so I guess it doesn't matter what you put in there...

Who needs a cornea or an IOL anyway, since the fundamental eye will always fix itself if left alone through the mystery of dynamic nature?

w.stacy, o.d.
.

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