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Toric Intra-Ocular Lens

Toric intra-ocular lenses are specialised monofocal lenses and are often the best option for people with astigmatism.

Astigmatism is caused by an irregular shape of the cornea that gives you some degree of blurred vision at all distances. Toric intraocular lenses give you focused vision at a single distance and also correct your astigmatism so you may not need distance glasses after surgery.

As with standard monofocal lenses, however, you will still need reading glasses to see objects clearly up close. If your degree of astigmatism is too great for a toric IOL to address in full, your doctor may recommend that you have an additional procedure.

At the time of cataract surgery or soon afterward, LASIK and limbal relaxing incisions may help to fully correct your astigmatism in combination with a toric IOL.

Toric intraocular are an excellent choice if you:

  • Have¬†astigmatism¬†as well as¬†cataracts.
  • Don‚Äôt mind wearing glasses or contact lenses for some distances.
  • Are less comfortable adapting to change and learning new skills.
  • Wish to avoid a possible increased risk of some night vision symptoms

Monovision may also be a good option for people with astigmatism who wish to minimize their dependence on glasses and who adapt to change more easily.

A good way to correct astigmatism as well as cataracts

If you have astigmatism in addition to cataracts, cataract treatment with a toric IOL can often address it, making your vision even clearer after surgery than it was before you developed cataracts. This can also reduce your dependence on glasses or contacts after surgery.

As with all surgery, patients with additional health conditions should ask their doctor what clarity of vision they can reasonably expect in their specific case.

Who are toric intraocular lenses for?

Many patients have a graduation in which myopia or hypermetropia coexists with astigmatism (and presbyopia). In the past, there was no way of correcting astigmatism using intraocular lenses, so people with astigmatism who had cataract surgery had to continue wearing spectacles or have another complementary treatment such as LASIK.

Today there is a safe alternative for people with medium to high astigmatism (from one dioptre).   As it is an optical defect which greatly affects quality of vision, patients are usually more satisfied by having the astigmatism corrected with a toric intraocular lens, as this allows them to eliminate dependency on spectacles.

Diagram of vision with astigmatism

Diagram of vision with astigmatism

How do toric monofocal lenses work?

The special feature of this design of intraocular lens is its ability to correct astigmatism. At the same time, it also corrects myopia and hypermetropia as necessary. As it is a monofocal lens, it only covers the refractive defect at a specific distance, so this correction is normally set for distance.  As with standard monofocal lenses, monovision can be applied; in other words, one eye for distance and the other for near vision.

For patients with astigmatism who would like to correct the refractive defect in distance and near vision at the same time, the ideal solution is toric multifocal intraocular lenses. 

Example of a toric intraocular lens

Example of a toric intraocular lens (



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