STATIC PERIMETRY: ACCURACY AND FLUCTUATIONS

Threshold fluctuations are divided into short‐term and long‐term effects applying statistical methods. Sixteen normal and pathological visual fields were analysed in order to obtain the numerical values for the short‐term, long‐term and total fluctuation. Special attention is paid to fortuitous variations between the results obtained at successive examinations. Finally the concept of spatial correlations is introduced.