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Akihiro Matsumoto1, Keisuke Yonehara1

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Human vision has a surprisingly low resolution, with about one million optic nerve fibers transmitting visual data. This biological limit contrasts sharply with the high pixel counts of modern smartphone cameras.

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Area of Science:

  • Neuroscience
  • Vision Science
  • Biophysics

Background:

  • The human visual system processes external light stimuli captured by the retina.
  • Photoreceptors in the retina convert photons into electrical signals.
  • These signals travel to the brain via the optic nerve.

Purpose of the Study:

  • To explain the biological basis of visual resolution.
  • To compare the resolution of the human eye to digital imaging technology.

Main Methods:

  • The study focuses on the number of optic nerve fibers as a measure of biological resolution.
  • Comparison of the human visual system's 'pixel' count to digital camera specifications.

Main Results:

  • The human optic nerve contains approximately one million fibers.
  • This results in a retinal image resolution of about one million pixels.
  • This resolution is significantly lower than modern smartphone cameras (40-50 million pixels).

Conclusions:

  • The subjective sharpness of human vision is not solely determined by the number of optic nerve fibers.
  • The brain's processing of visual information plays a crucial role in our perception of image quality.