Bifocal lenses

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.

For example, if you work in an office you may want to have intermediate vision in the top of the lens for meetings or presentations, and near vision in the segment for looking at your computer screen.

Distance vision

Distance vision

The outer area of the lens is for distance vision. Your normal glasses prescription will go in this part of the lens.

Near vision

Near vision

The lower half, or small segment in the lower half of the lens, is for looking at things that are near. Like built-in reading glasses in your normal prescription.

Types of bifocals lenses

Most of the lens in bifocal glasses will contain the power for distance vision, while only a smart part (or segment) corrects your near vision. The lens segment devoted to near vision correction can be different shapes, such as:

Half moon

Half moon

Round

Round

Narrow, 
                                    rectangular area

Narrow, rectangular area

 Full bottom 
                                    half of the lens

Full bottom half of the lens

A member of our team will work with you to understand your requirements and select a bifocal type that will offer you the best vision.

Frames for bifocal lenses

Frequently asked questions

How do I tell if I 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. So if this sounds familiar, and you already wear glasses, it might be time for an eye test and to maybe give bifocal glasses a go.

If you don’t already wear glasses for distance vision, your optometrist might recommend single-vision lenses.

Do bifocals lenses work for presbyopia?

Yes. Bifocal lenses combine two prescriptions into a single pair of glasses. The top part of the lens corrects distance vision, and the lower part corrects vision for close-up focusing. So no need for additional reading glasses.

What is the difference between progressive and bifocal lenses?

Bifocals have two lens powers – one for distance and one for up close. Progressive lenses combine three lens powers providing a third intermediate section which allows for an easier progression between distance and close vision.

Your optometrist will be able to recommend the best lens to suit your needs.

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