There are advantages and disadvantages to both these types of premium intraocular lenses.
Before making your final decision, be sure to discuss all your options with your eye surgeon.
New technology is now producing premium intraocular lenses which use a method called 'accommodation' to give sharper vision at a range of distances. Currently the only FDA approved accommodating lens is Crystalens, made by Bausch and Lomb.
This lens is termed an accommodating lens because it changes its position with the action of the eye muscles to give sharp vision at different distance ranges, much like the eye's natural lens would.
Patients with signs of cataracts before LASIK should not have LASIK because vision may be corrected with the intraocular lens used for cataract surgery.
Ironically, after LASIK the altered corneal surface causes inaccurate measurement of the intraocular lens power for cataract surgery.
Multifocal IOLs are designed with different zones over the lens to improve vision at multiple distances.
They work in a similar way toprogressive lensesin eyeglasses.I am 67 yrs old, I have cataracts both eyes, left eye cataract level 3.5, right eye 2.5, the doctor asked me can you read with out glasses I said yes then he picked nearsighted at -2.50 for monofocal IOL.He says I will be able to read at 16" not more or less without glasses.The newest high-definition version of Crystalens to be developed has a design which results in better close vision without sacrificing distance or the quality of intermediate vision.The high-definition Crystalens HD also creates less glare or halos with bright lights.This makes it less likely to produce side effects such as halos and glare.