Bifocal

How do bifocals work?
Rather than having two pairs of single-vision glasses, bifocal lenses can be a more convenient solution as they combine all your vision needs into one pair of glasses.
Bifocal lenses are typically worn by people over the age of 40-45 who need additional help with their near vision due to the effects of presbyopia where the crystalline lens inside the eye naturally begins to lose its ability to focus on near objects.
For example, if you work in an office you may want to have bifocal reading glasses, so you can have distance vision in the top of the lens for meetings or presentations, and near vision in the segment for looking at your computer screen or at documents.
How to tell if you need bifocals
As we get older, we’ll start to find it more and more difficult to read or focus on things that are close up. This is called presbyopia and is a perfectly normal part of ageing.
Most people become aware of presbyopia when they start holding their phone or books further away in order to see it clearly.
Presbyopia will start to happen around the age of 40. If this sounds familiar, and you already wear glasses, it might be time for an eye test and to maybe give bifocal reading glasses a go.
If you don’t already wear glasses for distance vision, your optician might recommend single-vision lenses.