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Intraocular Lenses in Cataract Surgery

An overview of intraocular lens options used in cataract surgery and the factors considered when choosing one.

The choice of lens depends on your eye's anatomy, your lifestyle, and your visual expectations.

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Types of Lenses (IOLs)

During surgery, we replace the cloudy natural lens with an artificial lens that stays in the eye permanently. These are the main options:

Far
Intermediate
Near

Monofocal Lenses

Designed mainly for one focal range, usually distance. Glasses are commonly needed for reading and computer work; the result also depends on the eye and lens calculation.

EDOF (Extended Depth of Focus)

Designed to extend the useful focus from distance towards intermediate vision. Near glasses may still be needed, and range, contrast and night symptoms vary between lens designs and patients.

Trifocal / Multifocal Lenses

Designed to reduce dependence on glasses at far, intermediate and near distances. Some patients notice halos or other dysphotopsias, particularly at night, and reduced contrast sensitivity; glasses may still be needed for certain tasks. Suitability depends on the eye and the patient's visual priorities.

Toric Lenses

Designed to reduce suitable corneal astigmatism. Toric correction can be combined with monofocal, EDOF or multifocal optics; residual astigmatism and a need for glasses remain possible.

If you have significant corneal astigmatism, a toric lens may be considered to improve its correction. The expected result and possible need for glasses depend on the individual eye.

Frequently asked questions

There is no universally "best" lens; there is the best lens for YOUR eye. Not all eyes are candidates for multifocal lenses. A thorough preoperative study is required.

Intraocular lenses are intended to remain in the eye permanently and replacement is uncommon. A further procedure may nevertheless be needed if the lens position, power, tolerance or another clinical issue warrants it.

Coverage depends on the policy, centre and specific lens. Ask the insurer and surgical centre for written information about what is included and any additional cost before deciding.
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Authorship, medical review and sources

Author and medical reviewer
Dr. Francisco Javier Abellán Martínez
Ophthalmologist · Medical registration no. 282880215
The same specialist currently authors and medically reviews the content; this is not presented as an independent external review.
Last medically reviewed
Sources consulted (4)

General educational content. It does not replace an individual assessment, diagnosis or personalised instructions from your healthcare team.

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