Contact lenses, or just contact lenses, are thin, curved lenses placed directly on the corner of your eyes. Contact lenses have been used for more than a century to correct vision, both as prosthetics for vision impairments and as fashionable eye accessories. There are a wide variety of reasons why people wear contact lenses, but there is one common reason that is only becoming more popular as people begin to discover all the benefits that they offer: improving the way that you look at the world.
rigid gas permeable lenses
One type of corrective contact lens is opaque lenses, also known as rigid gas permeable lenses (RGP lenses). These lenses are designed to keep light from entering a patient’s eye, while still allowing some light to pass through to the other eye. When these are prescribed for patients, the doctor will prescribe an assortment of different designs to fit each particular patient. For example, there are some RGP lenses that are made to have the appearance of eyelashes on one side of the eye, while there are some that are designed to have “eye bags” where the whites of the eye are noticeable.
toric contact lenses are different than traditional rigid gas permeable lenses because they have a silicone gel-like layer that replaces some of the transparency of traditional contacts. These contacts also do not have a protective coating that helps prevent ultraviolet light from entering a patient’s eye. Instead, soft contacts are designed to prevent some of the glare that comes from artificial lights from entering a patient’s eye. They are ideal for people who have very light hair and blue or green eyes because they filter out most of the glare that comes from the sun.
Because there are so many different contact lens designs available, there are thousands of different contact lens materials as well. Some of the more popular contact lens materials include: Hypoallergenic lenses, which are used for people who suffer from allergies; extended wear lenses, which are designed to be worn for a period of time beyond the original application; and daily wear lenses, which are designed to be worn throughout the day without a change. Most eye doctors prefer the daily/extended wear lenses because they require less maintenance and are available in a variety of styles. For example, some daily wear lenses can be worn all day, while others may only be worn for an hour or two during the course of the day.
silicone hydrogel lenses
Another type of contact lens material that is frequently used is silicone hydrogel lenses. These lenses are made from synthetic silicone that produces a very smooth surface that reduces the amount of abrasion that takes place when contact lenses are worn. Since most people do not require the high levels of water-based lubrication lubricants that are typically found in traditional gas permeable lenses, silicone hydrogel lenses tend to be the preferred choice. Although silicone hydrogel lenses can be more expensive than other types of soft lenses, the cost is considerably lower than that of traditional rigid gas permeable lenses and may be worth the price if it eliminates the need for frequently-needed contact lubricants.
Myopia Control Contacts
One type of lens that is often recommended for people with myopia, hypermetropia, and astigmatism problems is the special extended wear contact lenses called Myopia Control Contacts. This type of lens is specifically designed to correct eye irregularities such as myopia, hypermetropia, and astigmatism. Typically, these lenses provide a noticeable increase in distance vision for users when they are wearing their contacts at their maximum. For users who are already wearing myopia or hypermetropia contacts for long periods of time, Myopia Control Contacts can provide a way for them to continue using their contacts while improving their vision. Myopia Control Contacts are available at many optical stores.