Beschreibung
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).
Autorenporträt
InhaltsangabeAutomatic 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 i
Herstellerkennzeichnung:
Springer Verlag GmbH
Tiergartenstr. 17
69121 Heidelberg
DE
E-Mail: juergen.hartmann@springer.com
