Did you know that our eyes breathe? In a sense they do, because they take oxygen from the air, spreading through our tears over the cornea, and even send carbon dioxide into the air- as much the same way as the regular inhaling/exhaling.
When not enough oxygen reaches the cornea, symptoms such as discomfort, redness, dry eye, and blurred vision occur. Extreme lack of oxygen can result in permanent dry eye, corneal clouding (corneal dystrophy), and, in the most severe cases, the need for a corneal transplant.
In the world of contact lenses, the oxygen flow is always a concern for optometrists and manufacturers. Each lens, especially in their early years, automatically becomes a barrier to oxygen on insertion.
Manufacturers come up with a lens that would allow longer and adequate oxygen supply to the eyes. You can know more about such contact lenses in Toronto via https://drdorioeyecare.com/services/choosing-your-contact-lenses.
Image Source: Google
The problem began to be solved with the advent of soft contact lenses, and their ability to absorb water. The water content of the lens allows oxygen and carbon dioxide to pass through.
This factor is further enhanced when the silicone hydrogel contact lenses come to the market. Silicon is porous by nature and facilitates an even higher amount of oxygen to be delivered. In addition to providing a healthy eye, a silicone hydrogel contact lens is more convenient for those who have problems with lens tolerance in the past.
Users now have a large selection of soft contact lenses, not only in the brand and modalities but also where to buy them. Online sellers are most convenient in many cases. Consult with an ophthalmologist to determine soft contact lenses that may be suitable for you.