Briefly, the various types of lenses available include:
1. Monofocal lens — targets good vision at a chosen distance
2. Toric lens — corrects astigmatism
3. Multifocal lens — targets far and near vision
4. Trifocal lens — targets far, intermediate and near vision
5. Extended depth of focus (EDOF) lens — gives an extended range of vision
It is true that there is NO such thing as a best lens when comparing all of the above.
There is however, a best choice for each individual, depending on the individual’s visual requirements, daily activities and personal preferences.
A detailed consultation with the eye doctor will be able to elucidate which lens is best for your grandmom.
At the same time, each type of lens has their pros and cons; these should also be discussed before considering which lens is best for her. I hope this was helpful to you.
Yours truly,
Dr. Claudine Pang