In general, the thinner the contact lens, the better the oxygen permeability and wearing comfort of the lens. Therefore, many merchants use "ultra-thin" and "extra-thin" to create hot-selling products, which also affect consumers' choices to a certain extent. However, the thinner the contact lens, the better the idea is very one-sided. The thickness of the lens is balanced with other parameters. Contact lenses are not as thin as they are better.
In terms of benefits, the reduction in thickness of contact lenses can lead to a softer wearing experience, which can effectively reduce the foreign body sensation of the eyes and ensure the transmission of oxygen, which is very suitable for people with sensitive eyes.But at the same time, the evaporation rate of water will also become faster. If the water-locking ability of the lens is insufficient, it will in turn absorb the tears to replenish moisture. Even if it is worn by ordinary people, it is easy to feel dry, and people with less tear secretion will not even be more It is suitable.
In addition, the lens is too thin,the elasticity, strength and durability are reduced. Thin lenses are also more susceptible to breakage during washing and wearing, which is equivalent to increasing the cost of using contact lenses in disguise.Moreover, ultra-thin lenses generally have poor molding, and daily throwing is the most typical representative. The lens is too soft and will bring difficulty to the wearing operation.
Different thicknesses should be applied for different types of lenses. Although the process technology of contact lenses is continuously improved , in the actual use process, the thickness design of the lens still needs to be balanced and stable, and the influence on other parameters should be fully considered. Therefore, for the thickness of contact lenses, it should be treated more rationally.