2 months through 8 years (C&TC) or 3rd grade (Early Childhood and school screenings). Description : By noting the position of light being reflected in the pupils, the observer is able to check for a less obvious constant strabismus.
Preferential voting may refer to: 1  Ranked voting systems, all election methods that involve ranking candidates in order of preference. 2  Instant-runoff voting, referred to as preferential voting in Australia, is one type of ranked voting system.3  Range voting, in which voters assign points to each candidate. Ranked voting systems, all election methods that involve ranking candidates in order of preference. 2  Instant-runoff voting, referred to as preferential voting in Australia, is one type of ranked voting system. 3  Range voting, in which voters assign points to each candidate.
Exhaustive preferential (sometimes called Block Majority) is a variation of a majority system that can be used in multi-member electorates. Under this system, once a candidate is elected, all ballot papers are returned to the count to elect the next member.ifferent types of preferential voting include: 1  Full preferential â the voter must show a preference for all candidates listed for the ballot paper to be formal. 2  Partial preferential â the voter must show a minimum number of preferences for candidates â usually equal to the number to be elected.