What are Varifocals | How Do Varifocal Lenses Work & Which One Should You Buy | Specscart

Описание: What are varifocal glasses?

Varifocal glasses help to provide continuous vision in all directions. Varifocals help the person to correct distant, intermediate and distant vision. For the majority of the people, varifocal lenses are the most convenient way to resolve the problem of needing different corrections.

1. Why & When do we need Varifocal lenses?

As we grow older generally around the age of 40 - our eye muscles tend to get weak, which makes it difficult to read or see things up close.

At that point, if you were an existing glasses wearer, you will have a new ADD power in your prescription: which means you will now need a separate pair of reading glasses.

Now imagine you are doing groceries and at the supermarket aisle and you have to change your distance pair to reading ones, just to read the label of the product.

It is a lot of hassle if you are constantly doing it.

In order to overcome this issue - Varifocals were made. Modern Varifocals are digitally designed lenses, so that you can see the Distance, Intermediate (Arm’s length) and Reading at the bottom. So one pair of lenses for all day long that helps you see everything.

2. How do Varifocals work and how can they solve all this?

In order for a lens to correct your vision, it has to have some cure or curvature.

Varifocal lenses are digitally surfaced with different curves on top and bottom of the lens that allows you to move in between different vision fields such as distance and reading.

Now these curves are invisible if we look at them. However, in order to achieve this seamless look from combining different curves of each varifocal lens, they have some distortion towards the corners, because of the laws of physics.

Now the distortion level depends upon the quality of your lens and prescription. Higher the add power, higher the distortion on the lens.

But, it's very easy to get used to varifocal lenses - Once you start wearing them, you get used to them and your brain knows from which part to see where and when to move your head to adjust the vision field.

For example- When you are driving with a pair of varifocal glasses you can see distance/sat nav clearly - but to focus on the rear view you will have to move your head a little bit.

Similarly, another case would be that you are moving down the aisle of the supermarket and to look at the label of a product you just need to look through the lower part of the lens.

3. Which Varifocal lenses to buy?

As we are thrown a lot of options at some eyewear stores and opticians?
Such as they might show bronze, gold and platinum options where they will show maximum to minimum distortion respectively.

Varifocal Glasses - https://specscart.co.uk/varifocal-lenses

00:00 Introduction
00:25 What are varifocals and when do we need them?
01:28 How varifocal lenses work?
03:31 Which Varifocal Lenses should you buy?
04:49 outro

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