(a) Screening is required, for individuals who attend a facility, to detect vision disorders. Vision screening conducted under this subchapter by a person who is not a licensed professional, as the term is defined in this subchapter, must be conducted following the national Standard set by AAPOS currently found at http://www.aapos.org/terms/conditions/131, as revised, as they apply to age, verbal ability, ability to cooperate with screening, allowable methods of screening in different situations, and referral criteria, with the following exceptions...