Neurochromatic prescription determination

A method for determining a lens prescription, said method comprising:

• selecting a first ultraviolet (UV) trial lens and a second UV trial lens;
• determining whether said first UV trial lens or said second UV trial lens results in greater improvement in visual function;
• selecting said second UV trial lens for said lens prescription when said second UV trial lens results in greater improvement in visual function as compared to said first UV trial lens;
• selecting a neutral density group comprising a first neutral density trial lens and a second neutral density trial lens;
• determining whether said first neutral density trial lens or said second neutral density trial lens results in greater improvement in visual function;
• and
• selecting said second neutral density trial lens for said prescription when said second neutral density trial lens results in greater improvement in visual function as compared to said first neutral density trial lens.

A method for selecting a trial lens for corresponding prescription, said method comprising:

• selecting a neutral density group comprising a first neutral density trial lens and a second neutral density trial lens;
• determining whether said first neutral density trial lens or said second neutral density trial lens results in greater improvement in visual function;
• selecting said second neutral density trial lens for said prescription when said second neutral density trial lens results in greater improvement in visual function as compared to said first neutral density trial lens;
• selecting a first color group comprising a first color trial lens and a second color trial lens;
• determining whether said first color trial lens or said second color trial lens results in greater improvement in visual function;
• and
• selecting said second color trial lens for said prescription when said second color trial lens results in greater improvement in visual function as compared to said first color trial lens.