CONTACT LENSES AND ITS TYPES

Contact lenses are the perfect solution for people who are wary of conventional glasses and prefer a hazel free stylish look with vision correction. A contact lens is a plastic therapeutic device that is placed directly on to the cornea of the eye that provides a broader field of vision. 

TYPES OF CONTACT LENSES

 

There are different types of lenses available according to the construction material, wear time, design, and replacement schedule.

1. SOFT CONTACT LENSES

These are the most commonly preferred lenses that are made up of soft, flexible plastic that allows oxygen to pass through the cornea. They are more comfortable than rigid gas permeable lenses and offer greater flexibility and adaptability. The advanced and most popular type of soft contact lenses uses silicone hydro gel material that prevents eye irritation and provides increased oxygen supply to the eyes.

Based on the wear time and replacement schedule soft contact lenses can be further classified as

• EXTENDED WEAR LENSES – These are the lenses that offer the flexibility of overnight or continuous wear up to 30 days. However, it is vital for the eyes to have a rest period without lenses for at least one night.
   
• DISPOSABLE CONTACT LENSES – As the name suggests, these lenses can be disposed of after a particular time frame. These lenses most often are maintenance-friendly and do not require any cleaning. They even reduce the risk of eye infection and irritation. 

2. RIGID GAS-PERMEABLE LENSES

Also known as hard lenses, they are rigid lenses that provide clear and crispier vision by maintaining their shape on the eye. These lenses are more durable and easy to handle when compared to soft lenses. The initial eye adaptability of these lenses is slightly longer than soft lenses.

3. ORTHOKERATOLOGY (ORTHO K)

It is a lens fitting procedure that is performed to change the curvature of the cornea. This procedure makes use of specially designed gas permeable lenses to temporarily correct myopia. Ortho-K lenses are mostly prescribed for overnight use for at least eight hours each night.

4. DECORATIVE CONTACT LENSES

These are also known as colored lenses or cosmetic lenses. They are the medical devices that help to change the eye color to enhance your everyday look. These types of lenses are available with or without power correctness.

5. SCLERAL CONTACT LENSES

These are the large-diameter gas permeable contact lenses specially designed to vault over the entire corneal surface. They are more stable on the eye compared to traditional hard lenses. They are the best lens option for treating keratoconus, irregular cornea, and, astigmatism. These lenses offer great initial comfort with more breathing space and better vision for people suffering from dry eyes. 

All types of contact lenses should be used only after proper eye diagnosis and prescription from an ophthalmologist. To know what kind of lenses suit and serves your eye problem visit NEERA EYE CENTRE & LASER VISION , a leading Eye Care provider  that provides comprehensive treatment solutions to all your eye problems at an affordable cost.

Reviwed By: Dr Neera Agarwal

Visit Us: eye-care-hospital.com
Mail Us: neeraeye@gmail.com  
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