Is the lens an IQ tax?

No. Thinking about lenses is not an IQ tax. Sven lens is the third generation of functional myopia lens, which is customized based on different peripheral defocus data obtained by MRT and adopts IORC's original patented technology. This kind of lens can form stable peripheral ideal defocus, thus fully delaying the development of myopia. In addition, the existing out-of-focus area of myopia can not be over-corrected, which effectively expands the clear field of vision and greatly reduces the discomfort and visual fatigue usually associated with the second generation of lenses. Therefore, thinking lens is not an IQ tax, but an effective product for myopia prevention and control.