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There are at least as many types of contact lenses as there are eye conditions, and finding the ones that are most comfortable and effective for your eyes is key. Some people’s eyes are better suited to soft contact lenses, while other people opt for hard lenses.
Soft contact lenses
Soft lenses are made from a special gel-like, water-containing plastic called hydrogel. Hydrogel lenses are thin and very pliable and adhere to the front surface of the eye easily. Hydrogel lenses essentially popularized contact lens wear in the early 1970s because typically, these lenses are instantly comfortable.
Silicone hydrogel lenses are an advanced variety of soft contact lens that are more porous than regular hydrogel lenses. They allow more oxygen to reach the cornea. Since they were introduced to the public in 2002, silicone hydrogel contact lenses have become the most popular lenses to be prescribed in the United States.
Hard contact lenses
Gas permeable lenses (also known as GP or RGP) are a kind of rigid contact lens that is also porous, allowing oxygen to pass through them. One advantage that GP contacts have over soft or silicone hydrogel lenses is sharper optics, because of the lens material’s rigid nature.
PMMA lenses get their name from the rigid, transparent plastic material that they’re made of, called polymethyl methacrylate. PMMA lenses have excellent optics, but they do not transmit oxygen to the eye, so it can be difficult to get used to wearing them. Today, this type of hard contact lens has been virtually replaced by GP lenses, and is seldom prescribed.
Contact lenses for your lifestyle
Naturally, your lifestyle is a major factor when you choose contact lenses, and you need to weigh up the pros and the cons of different lens types. For some people, the convenience of disposable contact lenses is indispensable, whereas others may place more emphasis on reducing their monthly eye care costs.
OK lenses can be a game-changer for people with active lifestyles, as an alternative to laser eye surgery.
What are OK Lenses?
“OK” is an abbreviation for orthokeratology, and refers to a technique for treating myopia through a special type of contact lens. These lenses are specially designed to reshape the cornea during sleep, so you don’t need to wear any lenses during the day. For that reason, they are a popular vision correction solution for sportspeople.
Once OK Lenses have been fitted, you will be scheduled for a series of follow-up consultations to ensure that the quality of visual optimisation is being maintained. Our team will assess how well the treatment is progressing, and make any adjustments if necessary.
OK Lenses should only be fitted by trained ophthalmologists and optometrists. Our partnership with the United States’ leading provider of OK Lenses – Euclid Systems – ensures that we can always provide the highest standards of care and safety for our patients.