Intraocular lenses (IOLs) are artificial lenses that are implanted in the eye during cataract surgery or refractive lens exchange to replace the eye's natural lens. There are several types of intraocular lenses available, each with unique features and benefits that cater to different patients' needs. Here are some of the common types of intraocular lenses:

1. Monofocal IOLs: Monofocal lenses are the most basic type of IOLs and provide clear vision at a set focal distance, usually for distance vision. Patients with monofocal IOLs may still require reading glasses for near vision tasks.

2. Multifocal IOLs: Multifocal lenses are designed to provide clear vision at multiple distances, typically for both near and distance vision. This can reduce the need for glasses after cataract surgery, as these lenses help to correct presbyopia, the age-related loss of near vision.

3. Accommodative IOLs: Accommodative lenses are designed to move or shift inside the eye in response to the focusing muscles, allowing patients to achieve clear vision at different distances. These lenses can provide improved visual outcomes for activities that require focusing at various distances.

4. Toric IOLs: Toric lenses are specially designed to correct astigmatism in addition to cataracts. These lenses have different powers in different meridians of the lens, allowing for correction of both astigmatism and cataract at the same time.

5. Extended Depth of Focus (EDOF) IOLs: EDOF lenses are a newer type of IOL that provides an extended range of vision, offering clear vision at multiple distances without the distinct focal points of multifocal lenses. This can reduce the occurrence of visual disturbances like glare and halos.

6. Phakic IOLs: Phakic lenses are implanted in front of the natural lens to correct refractive errors such as nearsightedness, farsightedness, and astigmatism. These lenses are an option for patients who are not suitable candidates for laser eye surgery.

Choosing the right type of intraocular lens is a crucial decision that should be made in consultation with an ophthalmologist or eye surgeon. Factors such as lifestyle, visual needs, and eye health will influence the choice of IOL to ensure the best possible visual outcomes following cataract surgery or lens exchange.