LASIK is an operation that alters the optical focusing properties of the cornea. When a patient that underwent previous LASIK surgery develops a clinically significant cataract, the cataract must be removed and replaced with an intraocular lens (IOL). Ophthalmic surgeons have discovered the corneal focusing modifications from LASIK lead to less precise IOL predictions using the time tested IOL calculation formulas.
The problem is amplified if a multifocal IOL is used. Multifocal IOLs are designed to provide distance, intermediate, and near focus. Patients who had prior LASIK sometimes report visual difficulties when multifocal IOLs are implanted in their eyes.
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Fortunately, compensatory formulas have been developed leading to better IOL predictability. One of the most reliable compensatory formulas relies on pre-LASIK measurements. If you had LASIK you should request a copy of the LASIK treatment sheet that was printed for the LASIK surgeon’s records as it contains this information.
A final note regarding cataract surgery in patients who had previous LASIK surgery. The surgeon must be diligent to protect the LASIK “flap”. Disturbing the flap during cataract surgery could introduce additional postoperative focusing issues.Leave a reply →