Types of Contact Lenses
There are two main types of contact lenses: rigid gas permeable and soft. The former is more common and is used primarily for nearsightedness correction. Both types are designed to cover the cornea and part of the sclera. Hydrophilic lenses are made of a special plastic that absorbs water. These lenses are also known as hydrogels and are made to last for up to a year.
Disposable contact lenses require less maintenance
than traditional soft lenses. Disposable contact lenses are meant to be removed every week or month. The reason for frequent lens removal is to avoid protein deposits and eye infections. However, there are other disadvantages of wearing these lenses. These lens types are also less comfortable. The reinsertion time is longer and the lenses need to be cleaned after they have been removed from the eye. This is one of the major reasons why many people opt for soft lenses.
Rigid gas permeable lenses
are more comfortable and are available in a wide range of powers and designs. While they take longer to adapt to, they are more durable than soft lenses and can help correct irregular-shaped eyes. Some contact lens practitioners believe that rigid lenses are healthier than soft ones because they are pliable. Both types of lenses can also be reusable. And although they are more expensive than soft lenses, they are not as easily damaged.
Conventional hard lenses
are made of polymethyl methacrylate (PMMA), a rigid plastic that is widely used in shatterproof windows. Though they are the most durable type of lens, they are often uncomfortable and can cause the over-wearing syndrome. In addition to being less comfortable, they reduce the amount of oxygen reaching the cornea. As a result, these lenses do not conform to the shape of the eye.
Rigid gas permeable lenses
are the most common type of contact lens in the U.S., while soft gas permeable lenses are more comfortable. They have a similar profile to soft lenses, but they are more durable. Hybrid gas permeable lenses are also known as hybrid lenses. They are designed to blend the properties of both rigid and soft gas-permeable lenses. They offer sharper vision than both types of soft contacts.
Rigid contact lenses are durable and easy to care for.
They are made of silicone and are often used for long-term wear. They can correct a wide variety of vision problems and are generally more expensive than soft lenses. They are also more expensive, so they can be expensive. But, if you choose the right pair, you’ll be happy with your new pair of glasses or contact lens. They may not be the most comfortable option for you, but they can be beneficial for you.