This type of intraocular lens, also known as a single vision or monofocal IOL, provides clear vision at one set focal length at distance or near. The distance lenses can provide excellent vision when driving or going to a ballgame, while the near vision lenses can provide good vision for reading or sewing. Unless one eye is set for distance vision and one set for near (monovision), you will probably need glasses for reading or other close-up activities.