Intraocular lenses (IOLs) are artificial lenses placed inside the eye during cataract or lens-exchange surgery. Different designs provide various balances between distance, intermediate, and near vision.
Main IOL Types
Monofocal IOLs offer clear vision at one main distance, usually far, with glasses used for other ranges. Multifocal, trifocal, and extended-depth-of-focus lenses aim to give a broader range of vision, while toric IOLs correct astigmatism.
- Monofocal lenses are reliable with fewer visual side effects
- Premium IOLs can reduce dependence on glasses but may cause halos or glare
- Toric options are important for patients with significant corneal astigmatism
- Some patients choose monovision using different powers in each eye
Choosing an IOL
Selection depends on lifestyle, visual priorities, occupation, and eye health. Detailed measurements and discussion with the surgeon help match expectations with realistic outcomes.
- Macular disease, glaucoma, or dry eye may influence IOL choice
- Even with advanced lenses, reading glasses may still be helpful for fine print
- Accurate biometry reduces the chance of residual refractive error
- Enhancement procedures can sometimes fine-tune the result
