Novartis integrated its Seecon with another acquired subsidiary, Alcon, to sell eye care products under the Alcon brand. With the accumulation of contact lens technology and Alcon Ophthalmology's background, the integrated Alcon quickly became the second largest manufacturer in the soft contact lens industry. With the growth of the eye healthcare business, Alcon spun off from Novartis in 2019 and officially became an independent public company.
 
Alcon is the first brand of soft contact lenses to use silicone hydrogel, which combines fluorinated siloxane with hydrogel to deliver oxygen through two channels, silicone phase and hydrogel phase, which is significantly more permeable than hydrogel lenses and is more conducive to corneal respiration. At present, Alcon has three brands, the monthly disposable silicone hydrogel contact lens brand AIR OPTIX is one of the main products, in addition to the daily disposable contact lens brand DAILIES, and the color contact lens brand FreshLook.
 
AIR OPTIX中，O2 OPTIX舒视氧、AIR OPTIX AQUA水润舒视氧以及AIR OPTIX NIGHT&DAY AQUA水润日夜三款均使用硅水凝胶。O2 OPTIX舒视氧使用第一代硅水凝胶lotrafilcon B材质，透氧量达到了138Dk/t，但第一代硅水凝胶有着硬度高、保湿差的通病，爱尔康没有相应保湿技术加持，长时间佩戴体验并不是很理想，目前在国外已经下架，主要集中在发展中国家销售，价格低廉，6片装售价169元，可以作为初次尝试硅水凝胶隐形spectacles的选择。
 
In terms of moisturizing technology, Alcon is one step behind Johnson & Johnson Anshiyou, its main moisturizing AIR OPTIX AQUA hydrating Shushi Oxygen as an upgraded version of Shushi Oxygen, only a permanent hydrophilic film is plated on the surface of the lens, and other parameters are no different from Shushi Oxygen, compared with Johnson & Johnson Anshiyou, there is still a big gap in terms of hydration, and the price of 3 pieces is about 200 yuan.
 
爱尔康的AIR OPTIX NIGHT&DAY AQUA水润日夜相对优秀，这款产品透氧量高达175Dk/t，可以称作硅水凝胶软镜的经典之作，大大降低对角膜呼吸造成的负担，lens较硬，不过表面亲水膜相对削弱入眼异物感，24%的超低含水量不会过分失水干燥，耐得住长时间佩戴，248元3片装的价格不算低，适合追求清透感的使用者。
 
DAILIES is Alcon's specialized daily disposable contact lens brand, which also has three lenses, namely DAILIES TOTAL1 Water Gradient, FOCUS DAILIES All Day Comfort and DAILIES AquaComfortPLUS Multi-Moisturizing Daily Disposable Lenses.
 
The well-known DAILIES TOTAL1 Water Gradient is thrown every day, helping Alcon get rid of the black technology product of "lack of moisturizing technology". Its lens material delefilcon A is an improved version of the first generation of silicone hydrogel, the water content of the inner layer is 33%, and gradually increases to more than 80% to the outer layer, in the outermost layer, Shikang is good at the surface treatment technology to a new height, the water content is close to 100%, plus the lens hardness is only 0.7, the moisturizing feeling of the upper eye is "like dripping into a drop of water", but the price of 428 yuan 30 pieces is relatively high, it is recommended for users who pursue the ultimate comfort.
 
FOCUS DAILIES All Day Comfort and DAILIES Aqua Comfort PLUS are two low-end daily disposable lenses, and the prices of 30 pieces are about 100 yuan and 150 yuan respectively, which is relatively low. Both of them use non-ionic Nelfilcon A material, which is not easy to produce protein precipitation, and although the ultra-high water content of 69% is combined with blink moisturizing technology, it is actually only the addition of moisturizing factors, and it is easy to cause dry eyes after wearing it for more than three hours. It should be noted that these two invisible models are very fragile, so you need to be extra careful when taking them off, and do not rub your eyes vigorously when wearing them.