Not an ordinary aspheric lens. The Seasons High Definition Lens, unlike other aspheric lens in the market, incorporates the ideal aspheric curvature for each soft lens power and thickness and compensates for aberration caused by lens flexure on the eye. This results in improved visual acuity at all distance, as well as increased depth of field, reduced refractive astigmatism and improved contrast sensitivity, providing crisper, sharper and clear vision. The Seasons High Definition Lens is an excellent choice for low astigmats, early presbyopes, and those who wish to improve their overall vision.