During cataract surgery, your cloudy natural lens is replaced with a clear artificial lens called an intraocular lens, or IOL. It stays in your eye for life, so it is worth understanding your choices.
Monofocal lenses
A monofocal lens focuses at one distance, usually far. Most people see well for driving and walking, then use reading glasses for close work. It is the most widely used and most affordable option, with excellent quality of vision.
Toric lenses
If you have astigmatism, a toric lens corrects it at the same time as the cataract. Without it, you may still need glasses for distance even after surgery. Toric versions exist for both monofocal and premium lenses.
Extended depth of focus (EDOF) lenses
EDOF lenses give a continuous range of clear vision from distance to arm’s length, which covers driving, cooking and computer screens. You may still need light reading glasses for small print. They tend to cause fewer night-time halos than multifocal lenses.
Multifocal and trifocal lenses
These lenses split light to focus at near, intermediate and far distances. Many people become largely free of glasses. The trade-off is that some notice halos or glare around lights at night, especially in the first few months.
How to decide
| If you… | Consider |
|---|---|
| Don’t mind reading glasses | Monofocal |
| Have astigmatism | A toric version of your chosen lens |
| Spend long hours on screens and drive often | EDOF |
| Want the least dependence on glasses | Multifocal or trifocal |
| Drive a lot at night or have other eye conditions | Discuss carefully with your surgeon |
Not every lens suits every eye. Conditions such as glaucoma, retinal disease or an irregular cornea can change the recommendation. Your surgeon will take detailed measurements of your eye before advising you.
Ready to talk it through? Learn about cataract surgery at Sankalp Nethralaya, or book a consultation.
Frequently asked questions
Can I change my lens later?
Lens exchange is possible but is a more complex operation. It is best to choose carefully before surgery.
Which lens is best for night driving?
Monofocal and EDOF lenses generally cause fewer halos than multifocal lenses. Discuss your driving habits with your surgeon.
Sources
This article is for general information and does not replace an examination by an eye doctor. If you have symptoms, please book a consultation.