What are Bifocal Lenses?
If you already have eyewear to help with one viewing distance but are starting to struggle with up close vision especially when reading, you may have Presbyopia, a gradual, natural condition within the eye that reduces its ability to focus on near objects.
There are various eyewear options for correcting presbyopia, one of which is Bifocal lenses. Bifocals are two-part lenses, with distance vision in the top of the lens and close-up vision in the bottom of the lens. However, bifocal lenses have a visible line that is distracting from both sides and wearers also experience an “image jump” when moving between viewing distances. While bifocal lenses correct for near and distance viewing, they do not provide a mid-range viewing area.
For this reason, some may choose Trifocal lenses to assist with viewing all distances. Trifocals are lenses divided into three segments – for distance, mid-range and near viewing. However, these lenses have even more distracting lines to get in the way of good vision and good looks.
The newer, preferred eyewear to correct presbyopia is No-Line Progressive Lenses . The goal in progressive lens design is to provide sharp, clear vision for all distances. No-Line Progressive Lenses provide a seamless progression between distance, intermediate and near vision for more natural viewing experience without the distracting, unattractive lines that can be found in bifocals and trifocals.