Simply put, bifocal lenses are when one lens comprises of two prescriptions. Normally the top half of the lens is for distance and the bottom half (or a part of the bottom half) is for near vision.
Mostly, many people find bifocal lenses to be more convenient than having separate pairs of glasses for distance and close-up.
Certainly, it makes it easier because there is no need to swap between two pairs of glasses. Indeed, all of your vision needs are combined in one pair of glasses!
When it becomes more difficult with age to do things such as read or sew because you can’t see, this is called presbyopia. This will begin to happen around the age of 40.
The upper half of the lens is normally for distance vision, which means that your normal prescription will go here.
The lower half, or part of the lower half of the lens, is for looking at things that are close-up, such as when reading or looking at your phone. Therefore, the reading prescription will go here.
Furthermore, the part of the lens which is for near vision correction can be different shapes. For example, the lenses can be round, half moon, or rectangle.
When it comes to choosing lenses, it can be a bit overwhelming and there is a lot of information to take in. Our skilled employees have years of experience, and can help you decide what the best option for you is based on your favourite activities.