1. Material
All contact lenses can be divided into two large groups – soft and hard. Rigid lenses are only worn to correct vision in severe cases. About 90% of people choose soft lenses, which are hydrogel and silicone hydrogel. Silicone hydrogel lenses are more gas permeable, therefore preferable for the eyes.
Company Bausch + Lomb offers new contact lenses PureVision® 2 with high definition optics High Definition™… One of the thinnest lenses in the world, lenses 2 HD Reduces glare and enhances contrast and clarity, allowing you to see clearly even in low light.
2. Degree of transparency
If you want to not only improve your vision, but also change the color of your eyes or make it more expressive, you should use tinted contact lenses. For a costume party, decorative lenses with various patterns are suitable, which do not affect vision and serve only for decoration. But for daily use, it is best to choose colorless lenses.
3. Wearing mode
Until now, among ophthalmologists, there is a debate about which contact lenses are better – one-day or long-term wear. Daily replacement lenses are convenient because they do not need maintenance, but their cost is quite high. Flexible lenses can be left on for one or more nights. Extended wear contact lenses can be worn on hold for up to 30 days, but they are not suitable for people with sensitive eyes.
Those who choose planned replacement contact lenses should take care of a care product, because the slightest ingress of microbes on the lenses can cause inflammation. To prevent this from happening, it is necessary to clean and disinfect contact lenses daily with a universal solution. Company Bausch + Lomb has created an innovative universal solution Biotrue ™that effectively cleans, disinfects and moisturizes lenses. Solution Biotrue ™ pH balanced and acts identical to natural tears, maintaining a favorable environment for the eyes. The composition of the solution Biotrue ™ includes hyaluronan contained in the tear and corneal epithelium. It has unique properties of viscoelasticity, attracts and retains water on the surface of the lens, ensuring maximum hydration. The combination of PHMB and PQ-1 provides a high level of lens disinfection.
4. Frequency of replacement
The lenses have a replacement period. Daily replacement lenses last only one day. Some routine contact lenses need to be changed weekly, monthly, semi-annually, or annually. It is important to remember that wearing contact lenses will only be comfortable with regular daily care. Contact lenses 2 with high definition optics High Definition™ must be changed every month. They are packed in a blister with a moisturizing solution to help your eyes stay comfortable all day long.
When choosing contact lenses, you should pay attention to all the criteria and be sure to consult with an ophthalmologist.