Contact lenses are a very thin and round layer of plastic that mixes with the natural water of the eyes and helps in improving a person’s vision. It’s worn on the tear film of your eyes that covers the cornea. The working mechanism of contact lenses is the same as an eyeglass.
Both eyeglasses and contact lenses help in improving the eyesight of a person by correcting refractive errors. When the eye does not bend or focus light properly, then it is called refractive error. This error creates blurred images.
There are mainly four types of refractive errors:
- Myopia (nearsightedness)
- Hyperopia (farsightedness)
- Astigmatism (distorted vision)
- Presbyopia
Contact lenses can be worn for a long time while wearing sunglasses can be a bit tiring. Modern technology lenses result in crisp vision that’s healthier for the eyes. The maximum recommended daily use for any contact lens is 14-16 hours by qualified doctors.
Lenses can cause eye issues such as eye infections and corneal ulcers. Hence, it’s important to choose the best contacts for your eyes. Different eye contact brands such as Biofinity Contact Lenses can benefit most people and help avoid allergies. Cooper Vision is the parent company that manufactures Biofinity Contact Lenses and is recommended by doctors around the US. The company was founded in 1958 and its headquarters were in San Ramon, California, United States of America.
Following are the types of lenses available in the market:
- Soft Lenses: Soft contact lenses are created from soft and breathable plastic material. It allows air to pass through the cornea. These lenses are more comfortable and easy to fit in the eyes than any other lenses. These lenses are durable and less expensive. Silicone-Hydrogels are used to make these lenses.
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Rigid Gas Permeable (RGP) Contact Lenses: RGP lenses are also known as hard lenses. These are lenses that last for a longer time. Eyes have to adjust with these lenses as they are not very comfortable initially. RGP can provide you with a clearer and crisper vision.
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Disposable (Replacement Schedule) Contact Lenses: These contact lenses can be used for a limited period of time because these come with an expiry date. They start to tear after some time. These are the least expensive pair of contact lenses. The prescribed wearing period varies from 7 days to 30 days.
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Extended wear contacts: You can wear these lenses for an extended time period. The benefit of wearing these lenses is that you can wear them at night and even while you are sleeping. But these are the least recommended pair of contact lenses by doctors as it has a high possibility of getting serious infections. These lenses should be cleaned once a week.
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- Decorative lenses: These lenses are mainly used by people in the fashion industry as sometimes they need to match the colour of their eyes to the dress they are wearing. People celebrating Halloween also use these kinds of contact lenses.
- Coloured or Tinted contacts: These lenses also help in correcting refractive errors. But they are tinted in black colour so that people can wear them for a long day. No one assumes that you are wearing some kind of lens.
So if you’re thinking of replacing your eyeglasses with contact lenses, today it’s easy to find online solutions and even perform a free online eye exam to check your vision.
