Assessing the Design of PureVision Multi-focal vs. Monovision
PureVision Multifocal lenses
- Wide-intermediate power profile delivers outstanding vision in the 16- to 48-inch range
- Independence from reading glasses
- Long-term solution - patients can keep same modality as ADD needs increase
- Maintains binocularity, improves depth perception and visual outcomes
- Center-near aspheric design enables natural transitions near to far
Monovision
- Compromised intermediate vision
- Occasional reliance on spectacles for mid-range vision (sports, computer work)
- Short-term correction - refits required as distance and ADD disparity increases
- Diminished binocularity, depth perception, and night vision
- Uses non-dominant eye for near and dominant eye for distance