Main description:

The Seventh International Visual Field Symposium organized by the Interna tional Perimetric Society was held in Amsterdam, The Netherlands, September 6-10,1986. In many respects it was an exciting and fruitful meeting. The number of participants was greater than ever. The number of papers was too great to accommodate all of them. The quality of the papers reflects the continuously rising interest in perimetry in general and in automated perimetry in particular. Last but not least the social programme was organized in the, by now, almost classical friendly, enjoyable and humouristic style of the International Perimetric Society. This created an atmosphere of openness and free exchange of informa tion whICh was clearly also felt in the scientific sessions. The scientific part was divided in seven sessions with 44 spoken papers and a separate postersession during which the 46 posters were discussed. The major themes of the meeting were 'The influence of media-disturbances on the visual field' and 'Advances in perimetry in glaucoma with special emphasis on pro gression'. The session on 'media' provided interesting information on how the visual field was effected by preretinal filters. The authors either studied the influence of lens or corneal opacities or simulated opacities by special filters placed in front of the eye. In two papers the effect of cataract was qualified by photography or stray light measurements.

Contents:

I. Influence of media opacities on the visual field.- 1. Influence of ocular media on perimetric results: effect of IOL implantation.- 2. Influence of ocular media on perimetric results: effect of simulated cataract.- 3. The influence of simulated media opacities on threshold measurements.- 4. Simulation of the influence of lens opacities on the perimetric results; investigated with orthoptic occluders.- 5. Relation between media disturbances and the visual field.- 6. Relationship between cataract density and visual field damage.- 7. A comparison of visual impairment caused by nuclear (NC) and posterior subcapsular (PSC) cataracts.- 8. The role of intraocular light scatter in the attenuation of the perimetric response.- 9. Computer perimetry in patients with corneal dystrophies.- 10. Does higher background illumination lessen the effect of media opacities on visual fields?.- II. Normal and pathological variability.- 1. Short-term and long-term fluctuation of thresholds in automated perimetry in normals, ocular hypertensives and glaucoma patients.- 2. Visual field variability in stable glaucoma patients.- 3. Total variance of serial Octopus visual fields in glaucomatous eyes.- 4. Variability of computerized threshold measurements across the central field in a normal population.- 5. Estimates of variance in visual field data.- 6. Fluctuation and population differences in automated perimetry and the influence on defect volume esimation.- 7. The distribution of visual field scores in a normal population.- 8. Kinetic short-term fluctuation in patients with glaucoma and suspected glaucoma.- 9. Artefacts of computerized perimetry may simulate glaucomatous defects.- 10. A longitudinal study of scotoma variation in glaucoma.- 11. The macular threshold: determination of population normal values.- III. Computerized visual field analysis.- 1. A system for the analysis of automated visual fields using the Humphrey Visual Field Analyzer.- 2. A package for the statistical analysis of computerized fields.- 3. Artificial intelligence in computerized perimetry.- 4. Trend analyses of automated visual fields.- 5. The quantification of the visual field in computer-assisted threshold perimetry.- 6. Behaviour of visual field indices with a gradient adaptive method.- 7. Computer-assisted visual field assessment: quantification, three-and four-dimensional representations.- 8. Quantitative supra-threshold static perimetry: the value of field score and asymmetry analysis in the early detection of chronic open angle glaucoma.- IV. New instruments, test programmes and displays.- 1. Clinical results with the Henson-Hamblin CFS2000.- 2. Visual field screening using two symmetrical stimuli - prototype of a new automatic perimeter.- 3. A new computerized perimeter ('Competer 750') for examination of neuro-ophthalmic patients.- 4. SAPPAR: an auxiliary program for SAPRO.- 5. Dynamic representation of the visual field.- 6. Comparative evaluation of the Humphrey Field Analyser, Peritest and Scoperimeter.- 7. Computer-aided analysis in automated dark-adapted static perimetry.- V. Glaucoma.- 1. Visual field and neuroretinal rim area changes with time.- 2. Comparison of the changes in the area of optic disc pallor and visual fields: a 9-year follow-up study.- 3. The changes of visual field sensitivity accompanied by enlargement of the glaucomatous optic cup.- 4. Patterns of early visual field loss in open angle glaucoma.- 5. Is there a difference between glaucoma patients with rather localized visual field damage and patients with more diffuse visual field damage?.- 6. First experiences with the new Octopus G1-program in chronic simple glaucoma.- 7. Cup/disk ratio, excavation volume, neuroretinal rim area of the optic disk in correlation to computer-perimetric quantification of visual field defects in glaucoma with and without pressure.- 8. Topography and progression of visual field damage in low tension glaucoma, open angle glaucoma and pigmentary glaucoma with the program Delta of the Octopus perimeter 201.- 9. The comparison of kinetic and static perimetry by means of the Arden test, the glare test, the colour vision test and PERG in patients with glaucoma and ocular hypertension.- 10. Glaucomatous field changes related to the method and degree of intracular pressure control.- 11. Correlation of intraocular pressure and visual field following argon laser trabeculoplasty.- 12. Perimetric changes induced by artificial hypotension as an attempt towards determination of risk IOP in early open angle glaucoma.- 13. The usefulness of automated perimetry in detecting early glaucoma.- 14. Do ocular vasospasms help cause low tension glaucoma?.- 15. On the provocation of visual field defects in glaucoma cases.- 16. Glaucoma follow-up by means of central differential threshold measurements.- VI. New psycho-physical tests.- 1. Multi-flash campimetry: the rapid assessment of temporal resolving power.- 2. Multi-flash campimetry and other psycho-physical tests in chronic open angle glaucoma.- 3. Pattern discrimination perimetry: a new concept in visual field testing.- 4. A computer-graphics visual field screener using high-pass spatial frequency resolution targets and multiple feedback devices.- 5. Peripheral displacement thresholds in normals, ocular hypertensives and glaucoma.- 6. Application of the Troxler effect in campimetry of glaucoma suspects.- VII. Fundus perimetry.- 1. Visual field in diabetic retinopathy - light sensitivity in retinal lesions.- 2. Early foveal dysfunction in glaucoma.- 3. The measurement of normal retinal sensitivity in the central quantitative visual field using a fundus photo-perimeter.- 4. Characteristics of two systems of human vision using fundus perimetry.- 5. Blind spots of normal and high myopic eyes measured by fundus photo-perimetry.- 6. A rapid technique for kinetic visual field determination in young children and adults with central retinal lesions.- VIII. Ergo-perimetry.- 1. Percentage impairment by visual field defects.- 2. Automated Esterman testing of disability in glaucoma.- 3. Functional quantification of the visual field: a new scoring method.- 4. Effects of visual field defects on driving performance.- IX. Miscellaneous.- 1. Standards of perimetry.- 2. Automated perimeter results: the need for a common language.- 3. JAWS (Joint Automated Weighting Statistic): a method of converting results between automated perimeters.- 4. Octopus visual field examination in Saudi Arabia: an assessment of patient performance.- 5. Staircase scoring procedures for automated perimetry.- 6. A new contingent algorithm for static automatic perimetry based upon chain pattern analysis.- 7. Reliability parameters in computerized perimetry.- 8. Experience with the reliability parameters of the Octopus automated perimeter.- 9. Primate arcuate nerve fiber bundle anatomy.- 10. A new numerical representation of the visual field in cases of chiasmal tumor.- 11. Pituitary adenomas with ocular manifestations: incidence of cases and clinical findings 1946-1984.- 12. Computerized perimetry in neuro-ophthalmology: comparison of different test patterns by an 'information index'.- 13. Selective retests in automated perimetry: an experimental study for the evaluation of the effect of the regression towards the mean.- 14. Binocular threshold campimetry in the amblyopic syndrome.- 15. Centro-coecal field examination in chronic alcoholism.- 16. The effect of miosis on visual field indices.- 17. Spectral sensitivities on a white background as a function of retinal eccentricity.- 18. Population study of global and local fatigue with prolonged threshold testing in automated perimetry.- 19. The correlation of the physiological blind spot and the disc area.- 20. Anomalous visual response in Tourette's syndrome.- Authors index.