EDUCATIONAL TOOL
During cataract surgery, the clouded natural lens is replaced with an intraocular lens (IOL). There are several families of IOLs, and they do not restore vision the same way at every distance. This interactive tool helps you visualise what each family of IOL prioritises — distance vision, screen, reading — and understand the trade-off specific to each one. Choose a scene, compare the families, and observe the sharpness curve by distance.
Educational simulation. The rendering is an average representation based on published data; it does not predict your personal result, which varies from one eye to another. The choice of IOL is decided case by case with your surgeon, after a complete pre-operative assessment.
Learn more: cataract surgery · multifocal IOLs · EDOF IOLs · pricing. A question about the IOL suited to your eye?
Frequently asked questions about choosing an IOL
What is an intraocular lens?
It is a clear artificial lens that replaces the natural lens during cataract surgery. It stays in place for life and helps restore clear vision. There are several families of IOLs, which restore vision differently depending on the distance.
What are the main families of IOLs?
There are monofocal IOLs (clear vision at a single distance, usually far), monofocal IOLs with slight extended depth of focus, EDOF IOLs (a continuous range from far to intermediate) and multifocal or trifocal IOLs (several distances in focus). Each family meets a different visual need and lifestyle.
Will I be able to do without glasses after the operation?
That depends on the family of IOL chosen and on your eye. A monofocal IOL gives clear distance vision but requires glasses for the screen and reading. EDOF and multifocal IOLs reduce dependence on glasses across more distances, at the cost of a trade-off (possible night-time halos). Complete independence from glasses cannot be guaranteed.
Does the simulator rendering match my future vision?
No. It is an average representation based on published scientific data, for educational purposes. Real perception depends on many factors specific to each eye. Only a complete ophthalmological examination can assess the IOL suited to your case.
How is the choice of IOL decided?
The choice is made case by case, together with your surgeon, based on your pre-operative assessment, the condition of your eye and your visual priorities (night driving, reading, screen work). This simulator helps you prepare that discussion; it does not replace it.
Does the simulator work on a smartphone?
Yes, the tool is accessible on computer, tablet and mobile. On a small screen, turn the device to landscape mode for a more comfortable comparison.