Literature DB >> 1081845

A new method for determining the blood quantity in the eye in a unit of time.

G Cristini, R Meduri, G C Garbini, A Giovannini.   

Abstract

The principles of rheography with "infinite time constant" are utilized. After applying a suction cup electrode mechanism, by gradual increases of the vacuum, ocular pressure rises above venous pressure, and without modification of arterial inflow, the venous outflow is blocked; in consequence an increase of blood accumulation in the interior of the eye occurs. The electrical impedance variation, as a result of the latter, gives the recorded tracing a "slow" rising curve, that maintains the same pulse morphology. After being analyzed and elaborated on with certain mathematical formulae, this curve makes it possible to calculate the blood flow in the eye in a unit of time. Statistics on normal patients of various ages are reported.

Entities:  

Mesh：

Year:  1975        PMID： 1081845     DOI： 10.1007/bf00506635

Source DB:  PubMed          Journal:  Albrecht Von Graefes Arch Klin Exp Ophthalmol        ISSN： 0065-6100


  10 in total

1.  [Modern criteria in the interpretation of rheography].

Authors:  U BECATTINI; G CANGI; M DELLA CORTE
Journal:  Riforma Med       Date:  1962-04-28

2.  Evaluation of venous occlusion plethysmograph.

Authors:  M C CONRAD; H D GREEN
Journal:  J Appl Physiol       Date:  1961-03       Impact factor: 3.531

3.  Rationale of venous occlusion plethysmography.

Authors:  P F FORMEL; J T DOYLE
Journal:  Circ Res       Date:  1957-07       Impact factor: 17.367

4.  Effect of small degrees of venous distension on the apparent inflow rate of blood to the human calf.

Authors:  D R COLES; B S KIDD
Journal:  Circ Res       Date:  1957-05       Impact factor: 17.367

5.  Changes in arterial and venous blood pressure and flow distal to a cuff inflated on the human arm.

Authors:  R W WILKINS; S E BRADLEY
Journal:  Am J Physiol       Date:  1946-10

6.  The origin of the variations of body impedance occurring during the cardiac cycle.

Authors:  F H BONJER; J VAN DEN BERG; M N J DIRKEN
Journal:  Circulation       Date:  1952-09       Impact factor: 29.690

7.  [Study of a method of eye irrigation measurement by rheographic technic with 4 electrodes].

Authors:  M Mouillon; J L Bonnet; J F Piquard
Journal:  Bull Mem Soc Fr Ophtalmol       Date:  1973

8.  [Oculorheography. A method for studies in intraocular circulation].

Authors:  H Bettelheim
Journal:  Albrecht Von Graefes Arch Klin Exp Ophthalmol       Date:  1971

9.  [Rheooculography].

Authors:  G Ersler
Journal:  Klin Monbl Augenheilkd       Date:  1968-08       Impact factor: 0.700

10.  [Infinite time constant peripheral and hepaoo-splenic rheography. I. Rheography of the peripheral circulation (quantitative measurement of flow)].

Authors:  G C Garbini; T Posteli
Journal:  Arch Patol Clin Med       Date:  1969-04
  10 in total
  3 in total

1.  Lack of association between glaucoma and macular choroidal thickness measured with enhanced depth-imaging optical coherence tomography.

Authors:  Jean-Claude Mwanza; Jessica T Hochberg; Michael R Banitt; William J Feuer; Donald L Budenz
Journal:  Invest Ophthalmol Vis Sci       Date:  2011-05-18       Impact factor: 4.799

2.  Ocular hypertension in primary glaucoma: a new hypothesis.

Authors:  G Cristini; A Consolani; F Lazzari
Journal:  Albrecht Von Graefes Arch Klin Exp Ophthalmol       Date:  1980

3.  Pressure lowering effect of timolol with reference to its topical vascular action.

Authors:  G Cristini; A Giovannini
Journal:  Albrecht Von Graefes Arch Klin Exp Ophthalmol       Date:  1979-10
  3 in total

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