Small aperture lenses function by incorporating a tiny central opening that controls the amount of light entering the eye. This design reduces the effects of light scatter and optical aberrations, which enhances visual sharpness and contrast. By directing light more efficiently to the retina, these lenses improve clarity and detail, especially in low-light conditions. The lenses are implanted during cataract surgery or as a corrective measure for other visual impairments. The result is improved vision with enhanced contrast and reduced distortion, contributing to a more accurate and satisfying visual experience.