Halos and star bursts after IOL implant

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Halos and star bursts after IOL implant

Postby rlwags » Thu Aug 10, 2006 2:58 pm

Had Crystal lens implanted in both eyes in early July. Both eyes have halos and starbursts. Doctor is puzzled about this and is thinking of piggy-backing a lens to try to improve the sight. Is this the usual procedure for correcting this problem. Are there other ways to eliminate this problem, without having to go through surgery again
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Postby LasikExpert » Thu Aug 10, 2006 4:57 pm

If your problem is worse in low light environments and almost nonexistent in brightly lit environments, then the problem undoubtedly relates to the difference in the size of the intraocular lens (IOL) and the size of your naturally dilated pupils. The lens is not large enough to catch all the light when your pupils become large. We have an article about pupil size issues and refractive surgery and all issues apply to Crystalens and Pupil Size

If the problem relates to pupil size, then you may want to discuss the use of Alphagan P with your doctor. This is an eye drop that is designed for glaucoma treatment, but has a side effect of reducing the size of the pupil. A drop of Alphagan P in the evening may resolve your problems for that night.

If your problem exists in all light environments, then it is not due to the optic v. pupil size. Halos and starbursts in brightly lit environments indicate a disruption of the cornea or the capsulotomy created during Crystalens surgery or even simple refractive error. Problems with the cornea and the capsule should be visible to the doctor upon examination. Refractive error can be corrected with glasses, contact lenses, and possibly a piggy-back IOL.

A piggy-back lens will not resolve the problem if the problem relates to optic size. Although the piggy-back lens may be large enough to accommodate the size of the pupil, the refractive power of the piggy-back lens will be equal throughout. That means that you would have either a significant overcorrection in the middle where the two lenses combine refractive power, or an undercorrection at the edge where only the piggy-back lens is providing focus.

If the problem is an optic size issue, the only two responses are to reduce the size of the pupil or exchange the Crystalens with a different IOL that has a larger optic zone or the ongoing use of Alphagan P or similar substances to cause a reduction in pupil size.
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