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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 70, Iss. 10 — Oct. 1, 1980
  • pp: 1234–1238

Blue field entoptic phenomenon and blood velocity in the retinal capillaries

C. E. Riva and B. Petrig  »View Author Affiliations


JOSA, Vol. 70, Issue 10, pp. 1234-1238 (1980)
http://dx.doi.org/10.1364/JOSA.70.001234


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Abstract

The blue field entoptic phenomenon consists of the perception of one’s own leukocytes (white blood cells) flowing in the macular capillaries of the retina. A method has been developed for determining the speed of the leukocytes. In this method, the motion of the leukocytes is simulated on a screen by means of a minicomputer system. The subject is instructed to match the motion of the simulated white blood cells with that of his own leukocytes. For this, he can adjust the number and the maximum and minimum speeds of the simulated particles. Measurements in five young subjects with normal fundi indicate that the speed of the leukocytes in the macular capillaries of the retina is pulsatile. Minimum and maximum speeds are approximately 0.5 and 1 mm/s.

© 1980 Optical Society of America

Citation
C. E. Riva and B. Petrig, "Blue field entoptic phenomenon and blood velocity in the retinal capillaries," J. Opt. Soc. Am. 70, 1234-1238 (1980)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-70-10-1234


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References

  1. K. Vierordt, Grundriss der Physiologie (Meidinger, Frankfurt, 1860).
  2. K. Kato, "The velocity of the blood stream in the retinal capillaries of the human eye. (The variation of the velocity of the blood stream after standing)," Acta. Soc. Ophthalmol. Jpn. 55, 1070–1078 (1971) Japanese.
  3. D. H. Hoffmann and H. H. Podestà, "Zur Messung der Strümungsgeschwindigkeit in kleinsten Netzhautgefüssen," Acta, XX Concilium Ophthalmologicum Germania, 1966 . Edited by Weigelin E. Excerpta Medica, 1, 162–164 (1966).
  4. M. Sint, E. Riehm, and H. H. Podestà, "Untersuchungen üiber die Beziehungen der zentralen kapillaren Retinadurchblutung zur Augendruckhöhe bei Glaucompatienten mit Hilfe der entoptisch sichtbaren Blutbewegung," Klin. Mbl. Augenheilk, 171, 743–753 (1977).
  5. C. E. Riva, J. J. Kelley, S. H. Sinclair, and M. Loebel, "Optical transmission of cataractous lens at 430 nm and blue field entoptoscopy," Vision Res. 19, 1181–1183 (1979).
  6. C. E. Riva, G. T. Feke, B. Eberli, and V. Benary, "Bidirectional LDV system for absolute measurement of blood speed in retinal vessels," Appl. Opt. 18, 2301–2306 (1979).

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