RELIABILITY OF,DIFFERENCE AND CORRELATION BETWEEN FAR AND NEAR HYPERPHORIAS

Far and near hyperphorias were obtained from three groups of subjects, 25 each. Retest reliability from group 1 was high (0.96 and 0.99). Far then near hyperphorias from group 2 was highly correlated (0.94). Near then far hyperphorias from group 3 was not Significantly correlated. Frequency of occurrence of hyperphorias in. the reversed order of near then far measurement was significantly higher than that in the usual order of far then near, indicating influence of some undetermined sources. No significant difference was found between any comparison of the means. Thus, near hyperphoria may be omitted in the usual order of clinical measurement.