Types Of Contact Lenses
Disposable Soft Lenses
Disposable soft lenses are intended for 1-day of daily wear use. They are available in most prescriptions, including bifocal and toric (for astigmatism). This is the latest option in contact lens technology, and convenience. It is also one of the healthiest options available. They are easier to maintain than regular soft contacts. Many disposable lenses are designed for either replacement every morning, every two weeks, or even every month. Daily-wear disposables are worn during waking hours only, while extended-wear disposables can be worn for longer periods.
Replace every two weeks. Not intended to be worn overnight.
Replace every month. Overnight wear may be possible with doctor approval.
Extended-wear soft contact lenses can be worn all the time, including while the patient is asleep. Depending on whether a patient has a 7-day (standard) or 30-day lenses, they only need to take out and clean their contacts once a week and to give their eyes a rest and reduce the risk of a corneal infection. Extended-wear lenses are made of soft silicone that retains moisture longer than daily-wear contacts, allows more oxygen to reach the eye and prevents bacteria and protein buildup.
Gas-permeable contact lenses are very different from soft contact lenses, they may take a little longer to adapt to in the beginning. Most patients adapt after a few weeks and are very happy with the improved vision. These lenses are customized for each patient for best vision and comfort. Although there are many benefits to wearing RGP lenses, not everyone is a good candidate. Your eye doctor will guide you in finding the best contact lens option for your specific needs including the following:
- Correction of a wider range of vision problems, including a high degree of astigmatism
- A sharper vision than most soft lenses
- More oxygen flow through to the eye, reducing the risk of corneal irritation
- More durable than soft lenses and don’t need to be replaced as often, lasting as long as two or three years
- Less likely to tear like soft contact lenses
- Less prone to a buildup of deposit
Because they are much harder than flexible contacts, gas-permeable lenses may take some getting used to when they are first worn. They are also more likely than soft lenses to slip off the center of the eye and require adjustment, making them an inconvenient choice for patients who play sports or participate in other demanding activities. However, most patients soon grow accustomed to the feel of gas-permeable lenses and are satisfied with the improvement of their vision.