About 125 million people around the world wear contact lenses as an alternative to glasses for the correction of refractive errors (spectacle numbers). Sood Eye Care Center and its dedicated staff offers you various contact lenses options including Soft contact lenses (including disposable), Toric contact lenses, Cosmetic contact lenses, Rigid Gas-permeable (semi-soft) contact lenses
About 125 million people around the world wear contact lenses as an alternative to glasses for the correction of refractive errors (spectacle numbers). Sood Eye Care Center and its dedicated staff offers you various contact lenses options including Soft contact lenses (including disposable), Toric contact lenses, Cosmetic contact lenses, Rigid Gas-permeable (semi-soft) contact lenses.
Q What Are Contact Lenses?
Contact Lenses (CL) are small, thin, curved transparent discs that are designed to rest on the cornea, the clear front surface of the eye. Contacts cling to the film of tears over the cornea because of surface tension, the same force that causes a drop of water to cling to the side of a glass. Contact lenses are mostly used to correct near-sightedness, far-sightedness and astigmatism. Contacts provide a safe and effective way to correct vision when used with care and proper supervision. They can offer a good alternative to eyeglasses, depending on your eyes and your lifestyle. However, one must remember, they are health devices, not commodities or beauty aids, and not everyone can wear them. Also, their use can affect the well being of your eyes and only an optometrist or an ophthalmologist (eye surgeon) is qualified to assess the health of your eye. Your healthy vision is the first priority.
Q What are the types of Contact Lenses available?
There are basically two types of contact lenses:
1. Rigid Gas-permeable (RGP) Contact Lenses which are also known as “semi-soft lenses”
2. Soft Contact Lenses Hard Contact Lenses have become obsolete now.
Soft lenses can be further classified depending on the type of wear:
Disposable (Quarterly, Monthly, Fortnightly, Weekly and Daily)
Q What are the advantages and disadvantages of each type of contact lens?
RGP (Semi-soft) lenses: RGP lenses are made of special, firm plastics combined with other materials, such as silicone and fluoropolymers, which allow oxygen in the air to pass directly through the lens. These lenses are very durable and typically last longer than soft lenses. RGP lenses provide excellent quality of vision, have a long life, and can correct astigmatism as well as uneven curvature of the cornea. The disadvantages are that these may take a little longer to get used to, it is easier for dust to get behind RGP lenses, causing irritation and discomfort, and one canít switch back and forth with glasses as easily. However, regular wearers find them comfortable and the visual acuity outstanding. Soft lenses are made of flexible water-absorbent (hydrophilic) material having water content between 30-80%. These lenses are comfortable the moment they are inserted in the eye. They are less likely to dislodge and can be worn for longer periods. However, their biggest disadvantage is that they cannot correct higher degrees of astigmatism. They also need to be changed more frequently.