What is contacts made out of

How to read a contact lens prescription. All about contact lenses. Just for fun. More Blog Posts. MyDay family. MiSight 1 day. Biofinity family. Avaira Vitality family. Avaira Vitality Avaira Vitality toric. Additional products Find a lens quiz Contact lens technology Can't find your brand? Without a steady flow of oxygen, your eyes struggle to develop natural tears.

Silicone hydrogel contact lenses are a popular choice for those with more sensitive eyes as they allow more oxygen to pass through the material than standard hydrogel material. They also have a higher oxygen transmission which means that eyes will stay fresh and healthy throughout the day. The material keeps your eyes hydrated so that they don't get dry as easily. The unit of measurement for oxygen permeability through a contact lens depends on the thickness of the lens. These lenses do not contain high-water content.

Your optician will prescribe you the best lenses for your eyes, and if you have particularly dry eyes, then you'll most likely be prescribed mid-water type lenses due to their versatility and comfort. Following a good eye care routine can certainly benefit your eye health as can following a healthy diet.

If you suffer from dry eyes using eye drops will help to relieve you of any discomfort. Our comfi Drops work to rehydrate and lubricate your eyes throughout the whole day.

The amount of water in contact lenses varies depending on the type of lens. For those who wear soft contact lenses, the water content ranges from 38 to 75 per cent.

Soft contact lenses are usually available in three categories: Low water content contact lenses containing less than 40 per cent water, medium water content containing 50 to 60 per cent water and high water content contact lenses containing more than 60 per cent water. Soft contact lenses are made of pliable hydrophilic. These are water-loving plastics called hydrogels. Hydrogels absorb large amounts of water to keep lens material soft and supple, thereby aiding comfort.

Soft, flexible plastics include a silicone hydrogel material. This is silicone and hydrogel to help increase oxygen transmissibility. Silicone hydrogel lenses are new and are very popular as the material transmits up to six times more oxygen to the cornea. GP lenses may slow the progression of nearsightedness. In addition to their other advantages, some research suggests that wearing gas permeable lenses may slow the progression of myopia nearsightedness in some children. GPs are also used for orthokeratology, where specially designed contacts are worn during sleep to reshape the cornea and improve vision.

Potential disadvantages of GP lenses compared to soft lenses include: Need for adaptation. Unlike wearing soft lenses which are comfortable right from the start , you may need few weeks before you can wear GP lenses comfortably all day.

Initially, you may be able to wear the lenses only a few hours daily until your corneas adapt to them. But if you can tough it out for those first few days, you may be pleasantly surprised at how comfortable GP lenses become. Many people who switch from soft lenses to gas permeable lenses say GP lenses are more comfortable than soft lenses after their eyes fully adapt and their vision is noticeably clearer. Inability to wear part-time.

To fully adapt to GP lenses and to stay comfortable wearing them, you have to wear them every day. If you stop wearing them for several days, you will be more aware of the lenses on your eyes and you'll have to re-adapt to the lenses.

Increased possibility of dislodging. Because they are smaller than soft lenses, gas permeable lenses can dislodge from your eyes during contact sports or if you rub your eyes aggressively. Vulnerability to sand and dust.