We have registered the ERG in 26 chronic uraemics treated with periodic haemodialysis, nearly always finding a subnormal b-wave. In 11 chronic uraemics treated only with dietetic-conservative therapy, the electroretino­ gram resulted only slightly reduced and with a voltage clearly superior to that of the previous group. REFERENCES Agzamova, H.S. Tonographic values in patients with chronic renal insufficiency. Of tal. Zh. 20: 32-34 (1975). Berlyne, G.M. Microcrystalline conjunctival calcification in renal failure. Lancet II: 366-370 (1968). Biagini, M. & E.M. Gloria. Comportamento della pressione intraoculare durante emo­ dialisi in pazienti affetti da uremia cronica.Ann. Ottal. 93: 705-713 (1967). Boudet, Ch., B. Arnaud & D. Pincemin. Cataracte au cours d'h'emodialyses (dans les insuffisances renales chroniques). Bull. Soc. Ophtal. France 73: 199-205 (1973). Burn, R.A. Intraocular pressure during haemodialysis. Br. I. Ophthal. 57: 511-513 (1973). Cavallacci, G., G. Tota & A. Wirht. Studio sperimentale sull'effetto della difenilidan­ toina sull'Elettroretinogramma. Ann. Ottal. 100: 560-568 (1974). Demco, T.A., A.Q. McCormick & J.S.F. Richards. Conjunctival and corneal changes in chronic renal failure. Can. I. Ophthal. 9: 208-213 (1974). Deodati, F., P. Bec, M. Camezind & J .B. Labro. Les manifestations oculaires au cours de l'hemodialyse periodique. Bull. Soc. Ophtal. France 71: 87-92 (1971). Ehlers, N., F. Kruse Hansen, H.E. Hansen & O.A. Jensen. Corneoconjunctival changes in uremia. Acta Ophthal. Kbh. 50: 83-94 (1972).

Opening address.- The mode of action of neurotoxins and some common chemicals upon the electrophysiological properties of perfused mammalian retinas.- On the effect of Urethane and Halothane ® on the ERG of rats.- The effects of anesthetics on the ERG and EOG.- Effect of anesthetics on rats' ERG in vivo.- Drug effects on b-wave amplitude and on readaptation after glare.- Intravitreal injection of Gentamicin-experimental findings.- Zincits effect on the oscillatory potential.- Changes of the ERG in rabbits intravitreally treated with blood.- Surface area sizes of intravitreal copper particles: their effects on the ERG of rabbits and rats.- Electrophysiology in experimental siderosis: a follow-up study after removal of intraocular foreign body.- Experimental study of siderosis.- Extending retinal impairment following iron intraocular foreign body.- Threshold ERG study of experimentally induced metallosis (a preliminary report).- Thioridazine (MellarilR) ocular toxicity.- The ERG of chloroquine induced retinopathy: the prognostic significance of abnormalities on the ERG.- Follow-up in a case of retinopathy more than 10 years after stopping chloroquine therapy.- Toxic retinopathy in malaria tropica.- Toxic retinopathy induced by sodium iodate in rabbits: correlation between electroretinography, vitamin A levels in blood, electronmicroscopic histology and colour fluorescein angiography.- Slow off-effects of the human D.C. registered ERG.- Ethanolinduced changes in a slow off-effect (the h-wave) of the human D.C. registered ERG.- The influence of ethanol on retinal oscillatory potentials.- Changes induced by gangliosides on the c-wave in the rabbit.- Clinical electro-oculography: optimum illumination levels for the light adaptation phase.- The initial phase of theEOG-oscillation.- B. The initial phase of the EOG-oscillation in ischemic retinopathy.- Electro-oculographic investigations in central retinal vessel occlusions.- Some considerations regarding the effect of antimalarial drugs on the EOG and the 'macular EOG'.- Visual evoked responses to square wave reversing patterns.- Unfamiliar effects of flicker on the human EEG.- Electroperimetry by means of the scotopic VECP.- The optic nerve in endocrine orbitopathy.- The visual evoked potential in patients with cataracts.- The ERG and VEP in patients with severe eye injury.- Preoperative evaluation of traumatic eye lesions with visual evoked cortical potentials in response to sine wave modulated light.- Optic neuropathy due to alcohol abuse and evoked cortical potentials.- Visual evoked response anomalies in a patient with Friedreich's ataxia.- Invariances of the cone-dominated ERG (tree shrew and man).- ERG components of the chicken retina.- Changes in ERG wave form of the isolated bovine eye during long term perfusion.- GABA and taurine: implication in organization of receptive fields of ganglion cells in the frog retina.- Electroretinographic findings in chronic uraemics treated with periodic haemodialysis.- Case report of a family with sectoral retinal pigmentary dystrophy.- Studies on the early receptor potential in the human eye VI.' ERP in the fellow eyes of patients with idiopathic retinal detachment.- Functional and histological measures of retinal damage in chronic light exposure.- Photocoagulation and the electroretinogram.- Electrophysiological studies before and after Argon laser photocoagulation in diabetic retinopathy.- Electrodiagnosis in doubtful photic injury to the retina.- Macular recovery from dazzle (photo-stress) in normal women on birth controlpills (BCP).- Standardized electroophthalmography by using self-calibrating equipment.- Testing in electrophysiology.- A new instrument for ERG and VER recording under clinical conditions.- A new electrode for 'Ganzfeld' ERG.- Gold-coated Mylar(TM) (GCM) electrode for electroretinography.