What is contact lens?
A contact lens is a thin lens placed on the surface of an eye. Contact lenses are worn for curing vision correction problems like nearsightedness, farsightedness etc. and as a fashionable accessory also. Contact lenses come in various different colors like blue, green, grey, brown and more.
If you don’t want to wear eyeglasses, contact lenses are the best alternative for you.
Types of Contact Lens:
There are four main types of contact lenses:
- Soft Lenses: These are the lenses made of soft and flexible plastic and allow oxygen to pass through the eyes. They are comfortable to wear and cure dry eyes. One of the advance types of soft lenses are Silicone Hydrogel lenses – they allow more oxygen to reach your eye.
- Gas Permeable Lenses: These are the lenses that maintain shape on the eye and used for correcting refracting errors like astigmatism. They are also known as Rigid Gas Permeable (RGP) lenses and give clearer vision. They are easy to put on and have relatively long life.
- Disposable Lenses: As per FDA, Disposable lenses are the lenses that can be used once and discarded. There are two types of disposable lenses – schedule lenses and replacement schedule. Disposable schedule lenses are worn and disposed before sleeping whereas disposable replacement schedule lenses can be worn daily and replaced on schedule like two weeks, month etc.
- Extended Wear Lenses: These are the lenses that can be worn for one to six days and then disposed off. These lenses can be worn overnight also. Some FDA approved lenses in extended wear can be worn upto 30 days.
Best Contact Lens Brands You Can Choose From
- Bausch & Lomb
- Johnson & Johnson
- Cooper Vision
- Alcon Freshlook
- Aura Soft Clear