If you are around 40 and having some difficulty reading small print, you may be developing presbyopia, a common age-related condition that prevents you from clearly seeing close objects. If you already wear glasses for distance vision and develop presbyopia, you won't have to carry a separate pair of reading glasses. Multifocal lenses help you see clearly at all distances with one pair of glasses.
Before multifocals, bifocals were the popular fix, but they weren't perfect. While they help you to focus on both near and distant objects, middle distance is blurred. In an effort to create something more helpful, progressive lenses were invented which provide wearers with a transition region allowing your eyes to focus on objects at arms’ length.
Because progressive lenses gradually change power to allow you to focus at all distances, there is no line between the distance and near portions.
Initial adaptation to these no-line multifocals is expected. However, in just a few days, they will simplify your life by making it unnecessary to remove or switch glasses.
It's crucial to have your progressives or multifocals professionally measured and fitted. The lenses will not work in every frame and improper measurements will make it impossible to adapt to them. Glasses that aren't properly customized can lead to eye strain and headaches. A precision pair of multifocals will make a world of difference.