Variation of Pupil Size with Change in the Angle at Which the Light Stimulus Strikes the Retina.

@article{Spring1948VariationOP,
  title={Variation of Pupil Size with Change in the Angle at Which the Light Stimulus Strikes the Retina.},
  author={K H Spring and W. S. Stiles},
  journal={The British journal of ophthalmology},
  year={1948},
  volume={32 6},
  pages={340-6}
}
'iHE possibility of a variation in pupil size depending on the part of the natural pupil through which the light from the external field enters the eye has not been examined hitherto. Such a variation might occur for two reasons: (a) since the apparent brightness of an illuminated field is reduced if the rays enter near the edge rather than near the centre of the pupil (directional sensitivity of the retinat), a slightly larger pupil might be expected in the former case; (b) if, as is possible… CONTINUE READING

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