The normal natural lens within our eye changes shape, to focus near and far objects. This is called accommodation.
Monofocal IOL
A monofocal intraocular lens has a fixed single focus. With a monofocal IOL, reading glasses are typically required to focus closer objects for clear vision.
Diffractive Multifocal IOL
A diffractive multifocal IOL has a combined range of focus from near to far, regardless of lighting conditions.
IOL Comparison
A monofocal intraocular lens has a fixed single focus. Reading glasses are typically required to focus closer objects. A diffractive multifocal IOL has a combined range of focus from near to far.
Summary
There are several important considerations in your choice of intraocular lenses. It is best to study the features and discuss your needs with your eye care provider.