Computerised campimetry with static dark-on-bright stimuli

Perimetric examination of the central visual field with low contrast static dark-on-bright stimuli on a video display unit (VDU) is described. Threshold detection sensitivities to such dark stimuli are determined in normal as well as pathological central visual fields of glaucomatous, diabetic and neuro-ophthalmic patients. The static dark (light decrement type) stimuli on VDU seem capable of documenting the central visual field defects with high accuracy and revealing the field loss missed by conventional luminous (light increment type) stimuli of equal size and duration. In this report, the author presents examples from his new perimetric approach.