[Flicker and conventional perimetry in comparison with structural changes in glaucoma].

The selective perimetry with the FDF flicker stimulation has proven to be effective in a sample of 131 eyes in detecting early glaucomatous alterations, frequently without detectable changes in standard automated perimetry (SAP). Probability values may be successfully used as a new ordinal score of abnormality, especially for such marginal changes. Subjects must be thoroughly introduced to this new form of stimulation. The correlation of global perimetric with optic disc parameters is limited but slightly higher for FDF than for SAP. Interpretation thus requires an individual approach. In advanced cases SAP is preferable due to its larger dynamic range offered by the same instrument.