Table 1

Comparison of techniques used to analyse visual fields

Method of visual field analysisAdvantagesDisadvantages
Confrontation methods (binocular face description and quandrant finger counting, red pin)Relatively quick and easy, always available, cheap, can be performed at the bedsideLess sensitive than other methods, more difficult to compare results over time
Goldmann/Octopus (kinetic) perimetrySensitive. Good for monitoring defects over time. Can asses for patient reliabilityRequires a skilled operator; subject to interoperator variability.
Humphrey/Octopus (static) perimetrySensitive, good for monitoring defects over time, can assess for patient reliabilityRequires significant concentration, may produce artefacts if test conditions not correct (eg, spectacle rims). Impossible with sick patients