Main description:

The HF A is a computerized perimeter with a very comprehensive set of test point patterns, strategies and custom tests. The instrument employs several solutions which have proved useful in earlier computerized perimeters and several new concepts. The construction with stimulus generation through a projection system, input through a CRT, programmes stored in PROMs and a double disc drive for storage of test results makes it simple to adapt the instrument to future needs, whether these are new test algorithms or point patterns, different input or display screens or new statistical analysis programmes. All these changes could be made without modification of actual instrument hardware. REFERENCES 1. Dannheim, F. and Drance, S.M. Psycho visual disturbances in glaucoma. A study of temporal and spatial summation. Arch. Ophthalmol. 91: 463 -468 (1974). 2. Fankhauser, F. and Hiiberlin, H. Dynamic range and stray light. An estimate of the falsifying effect of stray light in perimetry. Documenta Ophthalmol. 50: 143-167 (1980). 3. Fankhauser, F., Hiiberlin, H. and Jenni, A. Octopus programs SAPRO and F. Two new principles for the analyses of the visual field. Graefes Arch. Klin. exp Ophthal- mo1216: 155-165 (1981).
4. Gramer, E. and Krieglstein, G.K. Zur Spezifitiit der iiberschwelligen Computer- perimetrie. Klin. Mbl. Augenheilk. 181; 373-375 (1982). 5. Gramer, E., Kontic, D. and Krieglstein, G.K. Die computerperimetrische Dar- stellung glaukomatoser Gesichtsfelddefekte in Abhangigkeit von der Stimulus- grosse. Ophthalmologica 183: 162-167 (1981).

Contents:

Automatic Perimetry: Threshold Fluctuations.- Results of a fluctuation analysis and defect volume program for automated static threshold perimetry with the scoperimeter.- Internal inconsistencies VS root mean square as measures of threshold variability.- The frequency distribution of the deviations in static perimetry.- Fluctuations in threshold and effect of fatigue in automated static perimetry (with the Octopus 201).- A simple routine for demonstrating increased threshold scatter by comparing stored computer fields.- Probability maps for evaluating automated visual fields.- Comparison between static and kinetic threshold fluctuations determined by automated perimetry.- The influence of artificially induced visual field defects on the visual field indices.- Automatic Perimetry: New Instruments and Strategies.- A new automatic perimeter.- The Humphrey Field Analyzer, construction and concepts.- Development of a visual field screening test using a Humphrey visual field analyzer.- New test procedures for the squid automated perimeter.- Histogram adaption in SAPRO operation.- The automated program 'Genoa Glaucoma Screening'.- Program sargon of the computer perimeter octopus in glaucoma patients.- Automatic Perimetry: Cartography.- Cartographic deformations in an orthogonal perimetric map.- Development and use of gradient isopters in computerized perimetry.- The role of retinal ganglion cell density and receptive-field size in photopic perimetry.- A new numerical representation of the visual field in regard to the retinal ganglion cell density.- Automatic Perimetry: General.- Psychological factors in computer-assisted perimetry: automatic and semi-automatic perimetry.- Psychophysics of intensity discrimination in relation to defect volume examination on the scoperimeter.- Comparing different automated strategies for static threshold determination.- Preliminary clinical trials with the Humphrey field analyzer.- Two years of experience with the perimetron automatic perimeter in glaucomatous patients.- Automatic perimetry in glaucoma: a clinical comparison of two computer-assisted perimeters (perimetron and octopus 2000).- Real time pattern recognition and feature analysis from video signals applied to eye movement and pupillary reflex monitoring.- The Importance of Peripheral Visual Fields in Neuro-Ophthalmology.- The earliest visual field defects in mid-chiasmal compression.- A study of the depth of hemianopic field defects for optimizing computerized perimetry.- Evaluating the usefulness in neuro-ophthalmology of visual field examinations peripheral to 30 degrees.- Usefulness of peripheral testing in automated screening perimetry.- Neuro-Ophthalmology: General.- VER-analysis with simultaneous hemifleld stimulation of transient potentials.- Vision changes in Parkinson's disease: electrophysiological and perimetric findings.- Pupillary signs in retinal and optic nerve disease.- Importance of visual field tests of patients with pituitary adenoma during pregnancy and post partum lactation.- Quantitative versus semiquantitative perimetry in neurological disorders.- Colour Perimetry.- Color perimetry of central scotomas in diseases of the macula and optic nerve.- Effects of colour on the contrast sensitivity function as a function of eccentricity.- Extrafoveal relative red-green sensitivity.- Increment threshold versus intensity curves for rods.- Suprathreshold red-green temporal responsiveness across the visual field.- Consideration on stiles II mechanisms in glaucomatous Bjerum area.- Color perimetry with a color naming method.- A modification of the Goldmann perimeter designed for colour perimetry.- Ergo-Perimetry.- The occupational visual field.- Deterioration in reading with narrowed visual fields.- Computerized scoring of the functional field - preliminary report.- Light emitting diodes in extrafoveal vision: an ergoperimetric problem.- Ergoperimetry in patients with severe visual field damage.- Experiments of peripheral vision in relation to distortion operated by multifocal lenses.- Glaucoma.- Acuity perimetry: a sensitive test for the detection of glaucomatous optic nerve damage.- The short-term effect of laser trabeculoplasty on the glaucomatous visual field.- The effect of argon laser trabeculoplasty on the visual field of patients with glaucoma.- The visual field before and after argon laser trabeculoplasty. Regression analysis based on computerized perimetry.- Peripheral nasal field defects.- The nature of visual loss in low tension glaucoma.- The mode of progression of visual field defects in glaucoma.- The glaucomatous visual field in detail as revealed by the Octopus F-programs.- Peripapillary atrophy and glaucomatous visual field defects.- Retinal nerve fibre layer and visual field functions in glaucoma.- Fluorescein angiography of the optic disc and visual field defects in open-angle glaucoma at the initial stage.- Fluorescein filling defects of the optic disc and functional evolution in glaucoma.- Diurnal variability of the visual field as measured by the Octopus perimeter.- Practical use of area computation for assessment of visual fields - analysis of the results of mecobalamin therapy for visual field defects in chronic glaucoma.- A comparison of contrast sensitivity function and field loss in glaucoma.- Response of macular capillary blood flow to changes in intraocular pressure as measured by the blue field simulation technique.- Early macular damage in glaucoma and suspected glaucoma patients.- Fundus Perimetry.- Fundus perimetry and Octopus perimetry for the evaluation of nerve fiber layer defects.- Studies of drusen of the optic nerve head.- Abnormal inner retinal function in gyrate atrophy.- Measurement of layer-by-layer perimetry responses using direct retinal projection by the scanning laser ophthalmoscope.- The Visual Field in Strabismus and Amblyopia.- Analysis of the binocular visual field of strabismic patients and its objective correlate.- Critical fusion frequency in amblyopia.- Distribution of retinal sensitivity in amblyopia with eccentric fixation.- Monocular and binocular visual fields in different types of strabismus.- General Topics.- Peripheral acuity in normal subjects.- Visual field examination by electro-oculography.- Influence of diazepam on the outcome of automated perimetry.- Volume of the three-dimensional visual field and its objective evaluation by shape coefficient: normal values by age and abnormal visual field.- Effects of random presentation on kinetic threshold.- The hill of vision: a predictable age related quantity?.- Functional perimetry used to evaluate laser treatment in diabetic macular disease.- Static automated perimetry in the follow-up of lens opacities.- The effect of blur upon static perimetric thresholds.- Application of hyperacuity to assess vision through media and retinal opacities: methodology.- Application of hyperacuity to assess vision through media and retinal opacities: clinical trials.- Light threshold and temporal resolution in the central visual field.- The role of retinal ganglion cell density and receptive-field size in photopic perimetry.