To evaluate different types of contact lenses, read:
Contact lenses can be classified by their material properties – soft silicone hydrogel lenses and hard lenses (made of flexible plastic).
Lenses vary according to their wear schedule – daily disposable, monthly, and extended wear lenses.
They can be classified according to their life span – daily disposable, monthly disposable, etc.
The correct visual problems – spherical, torque or astigmatic, or two focal.
When it comes to understanding what types of lenses are used in contact lenses, the scope of the answer is very wide. However, by ‘type’ we usually mean what materials are used to make contact lenses and how these lenses can be categorized according to the different types of materials used throughout the year. ۔
In earlier times, contacts used hard materials that did not support the proper permeability of oxygen to the eyes. This caused a lot of hard work and fatigue in the eyes and they could not wear for a long time. However, research in ocular science has led to new findings and advanced materials have been developed to create softer contact lenses.
- Soft links
Soft contacts have higher oxygen permeability than their predecessors. It rests on the sclera (white part of the eye) along the edges of the iris of the eye. Those who use contact lenses swear by soft contact lenses because they provide more comfort than hard contact. Nowadays, soft contact lenses also come in the form of colored contact lenses that can be used for purely cosmetic purposes. You can change the color of your eye iris with the color you like with soft-colored contact lenses.
Soft prescription lenses come in a variety of forms – daily, weekly, bi-weekly, monthly, or extended lenses.
Read Also: International A-Level Computer Science
- Hard gas permeable (RGP)
Hard gas permeable contact lenses are named after the type of material they are made of. RGP lenses are smaller than soft lenses. However, due to their hardness, hardly any oxygen permeability is possible. That way, users take longer to adjust to these types of contacts. RGP lenses rest on the pupil and the edges rest on the eye iris. Some ophthalmologists believe that although it takes longer for people to adjust to RGP lenses, they are healthier and more durable than soft lenses.
- Silicone hydrogel
The silicone hydrogel contact lens is the result of combining hydrophobic silicone with hydrophilic PHEMA. This material provides a better level of comfort and has higher permeability to oxygen.
Silicone hydrogel lenses differ from conventional hydrogel lenses in their high oxygen permeability. However, hydrogel contact lenses have a higher water content (fewer hydrogels contain 12-30% water while moderate hydrogels contain 40-70% water; high hydrogels contain 90-99.5% water whereas superabsorbent hydrogels More than 99.5% water!)
- Intraocular contact
These lenses are made of a flexible material known as PMMA or Polymethylmethacrylate and are applied to the eyes. Over time, scientists have researched these intraocular lenses to make your eyes softer and healthier. Nowadays, intraocular lenses are made of soft foldable materials such as silicone or acrylic and are easily applied to the eyes.
- Acrylic contacts
Acrylic contacts are usually expensive although they are not very popular with consumers. This new-age contact lens can have an advanced square edge design, non-glare edge design, or blue light filtering for UV rays to deal with vision problems.
We stock a wide range of all types of contact lense. Buy lenses from the shop for contact lenses at designer optics and get up to a 70% discount and same-day express delivery direct to your doorsteps. New Customers will get direct 10% off on all branded contacts
