Lenses Explained

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1. Single Vision Lenses

What are single vision lenses?

Single vision lenses have the same prescription across the whole surface of the lens and are suitable for driving, reading or other visual needs. Single vision lenses can easily be upgraded to thin and light lenses  to greatly improve the appearance of your lens, anti reflective coating to reduce reflections especially night time driving and transitions that change colour in presence of UV light.

If you need glasses for distance and reading then you do have the of seperate pairs which sometimes can be inconvenient therefore you may want to consider bifocals or varifocals

2. Bifocal Lenses

Bifocal lenses have two distinct powers  which are seperated by a visible segment at the bottom of the lens. The top part of the lens is for correcting your distant prescription and the segment at the bottom is for correcting your near vision prescription.

Bifocals are generally not useful if you need mid-distance vision i.e. computer work and some people find that the visible segment is not very cosmetically attractive.

 3. Varifocal Lenses

Varifocal (also known as multifocals or progressives) are blended lenses which allow you vision at all distances. There’s no visible line like in the bifocal so cosmetically varifocals are more attractive.

However varifocals will not give you 100% clear vision. The lenses are designed so that you have clear vision through a band down the middle of the lens. This means there are areas of soft focus along the edges of the lens. This requires more head movement when you are focusing on objects at different distances which can result in some users  describing the feeling as “image swimming”. The key is to be patient and persevere and with time this feeling disappears as your brain adapts.

Depending on the type of varifocal the soft focus can be greatly reduced making it much easier for adaptation. Visit our section on Bespoke Varifocals to find out more.  

 

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