A method for determining a lens prescription for the eye. The method includes selecting a first ultraviolet (UV) trial lens and determining whether the first UV trial lens results in improvement in visual function. The first UV trial lens may be selected for the lens prescription when the first UV trial lens results in improvement in visual function. The method includes selecting a first color group comprising a first color trial lens and a second color trial lens and determining whether the first color trial lens or the second color trial lens results in greater improvement in visual function. The second color trial lens may be selected for the prescription when the second color trial lens results in greater improvement in visual function as compared to the first color trial lens. The method may include reevaluating the first UV trial lens for improvement in visual function when not previously selected.
