To have an idea of the various types of contact lens, read on:
- Contact lenses can be classified by their material characteristics – soft silicone hydrogel lenses and rigid lenses (made from flexible plastic).
- The lens is of various kinds with their wearing schedule – daily disposable, monthly and extended wear lenses.
- They can be categorized by their lifetime – everyday wear, monthly disposable, etc.
- With visual problems that they are right – Spherical, toric or astigmatic, or bifocals.
When it comes to understanding what are the types of contact lenses used, the answer has a very wide scope.
However, with the 'type' we generally tend to mean, what materials are used makes contact lenses and how this lens can be categorized according to the various types of materials used throughout the year.
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In the past, rigid materials used in contact that does not support sufficient oxygen permeability to the eye. This causes a lot of energy and fatigue in the eyes and they can not be used for hours at a stretch.
However, research in ocular science gave way to finding newer and advanced materials developed to make soft contact lenses.
1. Soft Contact
Soft contact has a high oxygen permeability compared to its predecessors. He leaned on the edge of the iris of the eye to rest on the sclera (white part of the eye). Contact lens wearers swear by soft contact lenses because they provide more comfort than rigid contact. If you're looking for soft contact lenses in Toronto, you can browse various online sources.
Nowadays, soft contact lenses also come as colored contact lenses that can be used purely for cosmetic purposes. You can change the color of the iris of your eye color whatever you like with soft colored contact lenses.
2. Rigid Gas Permeable (RGP)
Rigid gas permeable contact lenses named after the type of material that goes into making them. The RGP lens is smaller than soft lenses. However, because of their rigidity, almost no oxygen permeability is possible. Thus, users need more time to adjust to the type of contact.
RGP lenses rest for pupils and edges rest on the iris of the eye. Some ophthalmologists believe that, even though people take longer to get adjusted to the RGP lenses, they are healthier and more durable than soft contact lenses.