phosphene definition

  • noun:
    • A sensation of light caused by excitation regarding the retina by technical or electrical means in the place of by light, as when the eyeballs tend to be pushed through closed lids.
    • A sensation of lights due to mechanical or electric (as opposed to optical) stimulation for the retina.
    • A luminous effect created through excitation of the retina by some cause except that the impingement upon it of rays of light, as by stress upon the eyeball if the lids are shut. Cf. after-image.
    • The luminous picture generated by pushing the eyeball using little finger or else. It really is because of the direct technical stimulation associated with the retina.

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