Accommodating lenses for cataracts


04-Oct-2020 17:48

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Intraocular lenses have been used since 1999 for correcting larger errors in near-sighted, far-sighted, and astigmatic eyes.This type of IOL is also called phakic intraocular lens (PIOL), and the crystalline lens is not removed.The most common type of IOL is the pseudophakic IOL.These are implanted during cataract surgery, after the cloudy eye's natural lens (colloquially called a cataract) has been removed.

" Corneal topography is considered a more quantitative test, and for purposes of aligning a toric IOL, most surgeons use a measurement called simulated keratometry (Sim K), which is calculated by the internal programming of the corneal topography machine, to determine the astigmatic meridian on the surface of the cornea.First, they are an alternative to LASIK, a form of eye surgery that does not work for people with serious vision problems.Effective IOL implants also entirely eliminate the need for glasses or contact lenses post-surgery for most patients.Again, these lenses can rotate inside the eye postoperatively or be placed incorrectly by the operating surgeon.

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Either way, the patient's preexisting astigmatism may not be corrected completely or may even increase.

The use of a flexible IOL enables the lens to be rolled for insertion into the capsule through a very small incision, thus avoiding the need for stitches.



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