Optical system having a transmission pattern comprising at least a first spectral zone Z1 extending from a wavelength of 380 nm to a first limit L1 between the first spectral zone Z1 and a second spectral zone Z2, and a third zone spectral Z3 extends from a second limit L2 between the second spectral zone Z2 and the third spectral zone Z3 to a wavelength of 780 nm, in which the first limit L1 is greater than or equal to 436 nm and the second limit L2 is greater than the first limit L1 and less than or equal to 487 nm； the average transmission values T1, T2, T3, in each spectral zone Z1, Z2, Z3 are such that: T2>； (T1 + T3) / 2 where T1 is the average transmission over the first spectral zone Z1, T2 the average transmission over the second spectral zone Z2, and T3 the average transmission over the third spectral zone Z3, T1 and T3 being greater than or equal to 8% and less than or equal to 43%, T2 being greater than T1 and T3 over the first spectral zones and third Z1 and Z3, in which the optical system is an optical system selected from the list of optical systems consisting of a pair of contact lenses or intraocular lenses for the eyes of a user or glasses comprising a pair of lenses for glasses.Sistema óptico que tiene un patrón de transmisión que comprende al menos una primera zona espectral Z1 que se extiende desde una longitud de onda de 380 nm hasta un primer límite L1 entre la primera zona espectral Z1 y una segunda zona espectral Z2, y una tercera zona espectral Z3 se extiende desde un segundo límite L2 entre la segunda zona espectral Z2 y la tercera zona espectral Z3 hasta una longitud de onda de 780 nm, en el que el primer límite L1 es mayor que o igual a 436 nm y el segundo límite L2 es mayor que el primer límite L1 y menor que o igual a 487 nm； los valores promedio de transmisión T1, T2, T3, en cada zona espectral Z1, Z2, Z3 son tales que: T2 >； (T1 + T3) / 2 siendo T1 la transmisión promedio sobre la primera zona espectral Z1, T2 la transmisión prom
