Human Physiology

, Volume 45, Issue 5, pp 507–514 | Cite as

The Study of Phosphene Illusion in Students with Partial Atrophy of the Optic Nerve and a Normal Fundus

  • S. I. RychkovaEmail author
  • R. I. Sandimirov
  • L. V. Kosobutskaya


We studied phosphene illusions in children with partial atrophy of the optic nerve (PAON) and children with normal retina and optic nerve. We observed 22 students with PAON and 24 students with a normal fundus (control group). We used test images in the variants of “scintillating grid” with disks of different diameters displayed on the computer screen. In children with PAON, we observed a shift of the maximum values of the illusion force in the direction of increasing diameters of the discs in the test images. In contrast to the control group, there was no significant difference in the severity of the illusion in students with PAON when the test image was rotated by 45°. The extinction illusion in children with PAON is more pronounced than in children with normal fundus.


phosphenes partial atrophy of the optic nerve extinction illusion 



Conflict of interests. The authors declare that they have no conflict of interest.

Statement of compliance with standards of research involving humans as subjects. All procedures performed in this study were in accordance with the 1964 Helsinki Declaration and its later amendments and were approved by local bioethical committee of the Kharkevich Institute of Information Transmission Problems, Russian Academy of Sciences, Moscow. Informed consent was obtained from all participants involved in the study, signed on their own or by their representative in law (for underage) after providing the information of potential risks, advantages, and type of the upcoming research.


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Copyright information

© Pleiades Publishing, Inc. 2019

Authors and Affiliations

  • S. I. Rychkova
    • 1
    Email author
  • R. I. Sandimirov
    • 2
    • 3
  • L. V. Kosobutskaya
    • 3
  1. 1.Kharkevich Institute for Information Transmission Problems, Russian Academy of SciencesMoscowRussia
  2. 2.Pirogov Russian National Research Medical UniversityMoscowRussia
  3. 3.School no. 1852MoscowRussia

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