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Exploring the Science Behind How Contact Lenses Really Work

  • 03 May 2022
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Vision problems are pretty common in Singapore — so much so that our nation is often labelled the myopia capital of the world, with over 80% of Singaporeans aged 18 being myopic.

Thankfully, there are also an abundance of vision correction options in Singapore, with no lack of optical shops—both online and offline—where you can easily buy a pair of spectacles or a box of contact lenses.

However, though the contact lens has been around for quite some time, it is not nearly as commonplace as its predecessing counterpart.

There are still multiple questions that people have about contact lenses, and how exactly they work. That is why we at Clearlab have put together this piece, such that you can better understand the science behind contact lenses.

How Vision Correction Works

With healthy vision, light enters the cornea and converges into a single point on the retina, which lies at the back of our eyes. Vision problems occur when our corneas can no longer focus properly — often due to its change in shape. For example, myopia is a result of your eyeballs being too long, which can be caused by staring too closely when reading or looking at screens, or simply due to genetic factors.

But vision problems are not limited to just myopia, neither are they confined to simple near- or far-sightedness. Here are some of the more common vision problems in Singapore that can be solved with daily or monthly disposable contact lenses:

  • Myopia (near-sightedness)
  • Hyperopia (far-sightedness)
  • Astigmatism
  • Presbyopia

How Contact Lenses Work

Essentially, contact lenses are thin, curved plastic discs that cover your eyes and corneas. They alter the way light enters the eye, and effectively improves the way light focuses on the retina via refraction. Wearing contact lenses thus makes objects appear clearer, and is a popular way most in Singapore opt for to fix their vision problems.

For near-sightedness, the lenses are thinner in the middle and thicker on the outside. Lenses for far-sightedness are the direct opposite. There are also contact lenses that are specially shaped to help with astigmatism, which you can easily find in Singapore in all sorts of forms — such as daily or monthly disposable lenses.

Contacts also come colourless and coloured, to suit your aesthetic preferences. Clearlab offers the following lens types in Singapore:

Learn more about daily vs monthly lenses here.

Fix Your Vision with Clearlab Contact Lenses

Contact lenses are a great way to fix blurry vision. Unlike glasses, they don’t get in your way during physical activity, and move along with your eyes such that you can enjoy natural vision no matter your line of sight. They also don’t get wet when it’s raining, or fog up when it’s cold.

Buy contact lenses online with Clearlab today, the leading contact lens shop in Singapore and the world. Arrange a free eye exam with us to get a prescription now.

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