A visual field study of 50 cases of unilateral functional amblyopia revealed a relative central scotoma of 2-10 degrees width and 0.1 to 0.8 LU (log units of neutral density filters) depth in 29 out of 50 cases by static perimetry, while kinetic perimetry revealed a central scotoma in only 3 cases of paramacular fixation. In the majority of cases the eccentric area of fixation lay on the edge o...

The purpose of this study was to evaluate the efficacy of three screening tests in detecting glaucoma in its early stage: the Tendency Oriented Perimetry (TOP) and Frequency Doubling Perimetry (FDP) visual field tests, and the Glaucoma Diagnostic (GDx) nerve fibre layer analyser. Eighteen patients with glaucoma who showed an early defect on HFA c 24-2 and twenty normals underwent the three test...

Clinical tests have a poor sensitivity to low to moderate degrees of neuro-visual damage, possibly because their test targets involve numerous receptive fields. A new test used briefly exposed microdots of high contrast. Multiple visual field areas were probed repeatedly, with ever-new microdot positions. Normal subjects responded to a median 96.0% of probes. Patients with different visual fiel...

The incidence of manifest glaucoma was determined by means of repeated automatic perimetry in a defined general population. It was estimated at 0.24% per year. It was largely independent of age but higher in women than in men and higher in the countryside than in the villages. In fact the incidence of manifest glaucoma was five times higher among women in the countryside than among men in the v...

The overall features of optimal examination strategies applied to computerassisted perimetry are described. Emphasis is placed on the concepts of specificity and adaptivity which result from the necessity to obtain the greatest information gain within the amount of time available to the clinical examination. Implications for computer hardware and software are derived, including the programmabil...