KEY POINTS
- Multifocal (MF) contact lenses are designed to provide functional vision to presbyopic patients of different ages, refractive errors and pupil sizes
- Pupil size decreases slightly with age; however, the correlation is weak and there is substantial variation among individuals
- There is no clinically significant relationship between pupil size and refractive error
- Neither age nor refractive error are relevant with respect to multifocal optic zone designs
- A recent study showed that Alcon multifocal contact lenses are pupil size independent and demonstrated that pupil size did not affect the number of lenses required for a proper lens fitting or visual performance