Contact lenses

Contact Lens Basics

Contact lenses are a great alternative to glasses for anyone who requires vision correction. Wearing glasses contacts can be a liberating transition from glasses. Here’s what you need to know if you are considering contact lenses.

The advantages of contact lenses

Contact lenses can correct a range of vision problems, including nearsightedness, farsightedness, astigmatism, and presbyopia.

Wearing contact lenses means you won’t need to worry about your glasses going missing or fogging up. If you lead an active lifestyle, contact lenses could be of great benefit you.

Contact lens technology is continuously improving, and almost anyone can wear them. Evensome who have had problems in the past or se eye doctors may havewere not suitable for contact lenses

Types of Contact Lenses

The two main types of contact lenses are soft and rigid gas permeable, or RGP.

Soft contact lenses are thin, moist, and flexible, which makes them comfortable to wear. Most soft lenses are made of silicone hydrogel, which allows oxygen to reach the surface of the eye. Soft contact lenses are the type worn by most contact lens wearers.

RGP lenses are a mixture of silicone and plastic that transmits more oxygen than the hard lenses of the past. Stronger corrections are possible with RGPs, and they can provide sharper vision than soft lenses. Patients with irregular-shaped corneas — a condition called keratoconus — canare often able to manage their condition with RGPs.

How Long Do Contact Lenses Last?

Soft contact lens products have different lifespans, providing a varying number of wears before needing to be replaced. Some soft lenses should be disposed of at the end of the day, while others can be cleaned, disinfected, and reused for a period of two to four weeks.

Most soft contact lenses should be taken out before bedtime, although special “extended wear” lenses can be worn 24 hours a day. Some extended wear lenses need to be removed and cleaned once a week, while others can be worn for 30 days continuously.

RGP wearers usually wear their lenses during the day and clean them properly in between wears. However, in orthokeratology, a patient wears special RGPs overnight, temporarily reshaping their corneas, allowing them to see clearly throughout the day without glasses or contacts. RGP lenses can last for a year or more if cared for properly.

In 2018, most people can wear contact lenses successfully, irrespective of any eye conditions they might have. To find out more, book a contact lens assessment with your eye doctor to discuss your suitability and the best contact lenses for you and your needs.