Intraocular Lens (IOL) Choices
Dr LaHood is a refractive cataract surgery specialist well known for his research relating to biometry, astigmatism management and the use of toric and multifocal IOL designs. He is on advisory boards for IOL manufacturers and frequently is an invited lecturer around the world to discuss use of various IOLs. This knowledge and experience means that he can offer you the best in IOL designs to suit the vision you want with your cataract surgery or refractive lens exchange. See below for information on different categories and this is something we will discuss in detail at your consultation prior to your surgery.
Standard Monofocal IOL
For a standard eye with minimal astigmatism, you can have great, focused vision with a standard monofocal IOL. The modern designs of these lens types give excellent vision quality. The eye will have one focus either for distance or near vision and so a decision will have to be made about the overall plan with both eyes. See presbyopia solutions for more on this.
Extended Depth of Focus (EDOF) IOL
This type of lens will give a range of vision. Usually they are used to give distance and intermediate vision so that you could drive as well as see the computer without glasses but prolonged reading would require reading glasses. There are different styles of these for different goals. Some will cause a little glare and halo as a trade off for that extra function.
The trifocal IOL gives three focal points and is a favourite of mine. If you want everything for your vision, this may be the best option for you. It gives good distance, intermediate and near vision meaning that you should not need glasses for any task including reading. The trade off is that you will initially experience glare and halos especially at night that will reduce over the first month. Maximum benefit is gained with this IOL in both eyes but one eye can be implanted as a mixture.
If your eye has any astigmatism, you need a toric IOL. Astigmatism is where one axis of your cornea is steeper than another. Think of a rugby ball compared to a soccer ball. Glasses correct this to give you crisp focused vision and a toric IOL will do the same. These IOLs are fantastic but need to be implanted and planned very precisely to maximise visual outcomes. Dr LaHood will be able to tell you whether a toric IOL is needed in your case. A toric IOL option of a trifocal IOL is often needed to give best results.