If you prefer to wear contact lenses instead of glasses to improve your vision, there are several types to choose from

If you prefer to wear contact lenses instead of glasses to improve your vision, there are several types to choose from.
Both hard and soft contact lenses have their advantages and disadvantages. Which one is right for you may depend on your vision needs, lifestyle, and personal preferences.
If you are considering hard contact lenses, read on to learn about the pros and cons of these lenses and how to use them safely.

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The most commonly used type of rigid contact lenses are rigid gas permeable lenses (RGP). They are more comfortable and safer to wear than earlier types of rigid lenses such as traditional polymethyl methacrylate (PMMA) lenses. PMMA lenses are rarely used today.
RGP lenses are made from flexible plastic materials that usually contain silicone. This lightweight material allows oxygen to pass directly through the lens to the cornea of ​​the eye.
Your cornea is the most transparent outer layer of your eye. Your cornea refracts light and acts as the outermost lens of your eye. When the cornea does not receive enough oxygen, it swells. This can lead to blurry or hazy vision, as well as other vision problems.
PMMA lenses do not allow oxygen to pass through the lenses. The only way oxygen can reach the cornea is through tears streaming under the lens every time you blink.
To allow tears to flow under the lens, PMMA lenses are quite small. There should also be a gap between the lens and the cornea. This makes PMMA lenses uncomfortable to wear and the lenses are more likely to fall out, especially during exercise.
Since RGP lenses allow oxygen to pass through, these lenses are larger than PMMA lenses and cover most of the eye.
In addition, the edges of the RGP lenses adhere more closely to the surface of your eyes. This makes them more comfortable to wear than older models. It also allows the lenses to stay on your eyes more securely.
Refractive errors occur when the shape of your eye prevents incoming light from focusing properly on the retina. The retina is a layer of light-sensitive tissue at the back of the eye.
Wearing RGP hard contact lenses can correct several types of refractive errors, including:
RGP hard contact lenses have several advantages over soft contact lenses. Let’s look at these benefits in more detail:
RGP hard contact lenses also have some drawbacks. Here are some common problems with these lenses.
If you want your hard contact lenses to last as long as possible, it’s important to take good care of them. Proper lens care can also reduce the risk of eye infections or corneal scratches.
Rigid gas permeable lenses (RGP) are the most common type of rigid contact lenses prescribed today. They generally provide clearer vision than soft contact lenses. They also last longer in the long run and are generally less expensive than soft lenses.
In addition, some conditions, including astigmatism, can be corrected more effectively with hard contact lenses.
However, hard contact lenses often take longer to get used to and may not be as comfortable as soft contact lenses. Talk to your ophthalmologist to find out which type of contact lens is best for you and your vision.

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