The device model relates to a blind-free three-leaf vision lens, wherein a circular lens with a surface which is divided into three regions by an upward arch and an upper arc, which are an upper leaf zone, a middle leaf zone and a lower leaf zone； The upper and lower leaves are fixed focus areas, the middle leaves are gradient zones, and the middle leaves contain the center of the lens； the effective area of the cut vision correction lens includes the above three areas. The utility model cleverly utilizes people's eye habits, whether it is nearsightedness or farsightedness, there are two most needed states of near vision and far vision, while the near and far visions adopt different luminosity numbers, and the gradation is smoothed by the luminosity gradation zone, and the vision is more For comfort, it satisfies the needs of myopia and hyperopia correction lenses； and it forms an are shape that is upwardly arched, conforming to the eye habits of focusing near the range and wide vision, to reduce the visual deterioration caused by visual fatigue caused by correction. And slow down the progress of vision.本新型涉及一種無盲區三葉視控鏡片，其圓形鏡片一表面由向上拱起的上弧線和下弧線分割成三個區域，分別為上葉區、中葉區和下葉區；所述上、下葉區為定焦區，中葉區為漸變區，且中葉區包含鏡片圓心；切割視力矯正鏡片有效區域包含上述三個區域。本新型巧妙利用人們用眼習慣，無論是近視或遠視，均存在視近和視遠兩種最需要的狀態，而視近和視遠採用不同光度數，借助光度漸變區平滑過度，視覺更為舒適，滿足近視和遠視矯正鏡片之需；而且成向上拱起的弧形狀，符合視近範圍集中、視遠視野寬廣的用眼習慣，達到減輕因矯正產生視覺疲勞。
