Monofocal intraocular lens (IOL)
The monofocal lens has a single focal point, i.e. it allows the operated eye to see well at a single distance. It works well for people who don’t mind wearing glasses or who have an abnormality in one or both eyes.
With a monofocal lens, your optometrist or ophthalmologist can offer you various correction solutions:
Both eyes corrected for distance vision
This solution will provide you with the best quality vision for tasks requiring distance vision, such as driving during the day or night, watching TV, going to the movies or doing sports.
However, you must wear glasses to correct your vision at an intermediate and near distance for reading a book, working on a computer, cooking, reading the time on your watch, doing your makeup, shaving or DIY. You may have to wear progressive glasses even if you do not need to wear them to see at a distance.
Monovision: one eye is corrected for distance vision and the other for near vision
You can choose to correct one eye (dominant eye) for distance vision and the other (non-dominant eye) for near vision. This method provides an alternative that allows you to reduce your dependence on corrective glasses. The monovision approach requires an ability to adapt, because it implies a compromise in the quality of vision:
- You will enjoy good vision at two specific distances for each separate eye, but may have difficulties combining both eyes together
- Reduced ability to judge distance, particularly when driving a vehicle (3D vision)
- Possible perception of halos around lights at night
Corrective glasses may be required to equalize the vision in both eyes for precision tasks or to improve your comfort for prolonged tasks, such as driving at night, working on a computer or reading small print.