Single Vision Lenses
Single vision lenses have a single prescription and can be used to correct either distance or reading difficulties.
These lenses combine computer and reading prescription into a single lens. There are no visible lines on the lenses and provides excellent visual relief to computer users.
Bifocal lenses combine the distance and the reading prescription into one pair of spectacles. There is a visible line on the lens indication the reading addition. It does not allow for clear intermediate vision (computer distance) and is not recommended for computer users.
Multifocal lenses combine distance, intermediate (computer distance) and reading prescription into one clear lens. There is no visible line on the lens and provide clear vision at all distances. Multifocal lenses are made with high-end technology which shortens the adaptation period.