Single-vision lenses

Single-vision lenses are used in glasses and sunglasses for people who suffer from short-sightedness or long-sightedness. Once you reach 40 years of age, you may start noticing issues with your vision when trying to focus on objects close by, or far away. If you experience just one of these eye conditions, rather than both, then single-vision lenses are an ideal solution for you. If, however, you experience both near and farsighted, then bifocal or varifocal lenses could be a better option for you.


Short-sightedness, also known as near-sightedness or Myopia, can develop early or later in life. It is a common eye condition, which causes you to struggle to clearly see things in the distance.

It occurs when the light which enters your eye falls in front of the retina, rather than on the retina, resulting in blurred vision when looking in the distance. Single-vision lenses are the most common and effective treatment for short-sightedness. The prescription in these lenses can make sure when the light enters your eye, it lands on the retina, helping you to see clearly in the distance.


Long-sightedness, also known as far-sightedness or Hypermetropia, is another common eye condition. It is often hereditary and causes you to struggle to clearly see objects nearby.

Whereas with short-sightedness light rays fall in front of the retina, if you suffer from farsightedness, light rays will fall behind the retina. This causes unclear vision when looking at nearby objects. This condition can be corrected with single-vision lenses or contact lenses.

The prescription in these lenses redirect light rays to fall on your retina, so you can see things close by more clearly.


Varifocal lenses have more than one prescription in each lens, meaning you can use the same pair of glasses or sunglasses for looking at short and long distances. Often, as you get older you begin to struggle to clearly see some things up close. This makes it harder to do everyday tasks like reading. This is where varifocal lenses can help. Rather than needing to carry around different glasses for long and short-sightedness, you can use varifocals for both.





Bifocal lenses contain two different prescriptions. These can be any prescription, however, there is usually one for distance and one for reading. The top half of the prescription tends to be for distance, whereas the bottom half is for near vision.