December 1981
Volume 21, Issue 6
Articles  |   December 1981
Induced movement of receptor alignment toward a new pupillary aperture.
Investigative Ophthalmology & Visual Science December 1981, Vol.21, 869-872. doi:
  • Views
  • PDF
  • Share
  • Tools
    • Alerts
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      R A Applegate, A B Bonds; Induced movement of receptor alignment toward a new pupillary aperture.. Invest. Ophthalmol. Vis. Sci. 1981;21(6):869-872. doi:

      Download citation file:

      © ARVO (1962-2015); The Authors (2016-present)

  • Supplements
This content is PDF only. Please click on the PDF icon to access.

Bonds and MacLeod (1978) reported on an individual whose receptors, as measured by the peak of the Stiles-Crawford function, were oriented in the direction of a traumatically displaced pupil. In an attempt to demonstrate that this orientational response is caused by an active alignment process and not simply a result of passive forces due to the traumatic ocular injury, we attempted to influence receptor alignment in the same eye by artificially creating a centered pupil. This was accomplished by placing on the subject's dilated eye a soft contact lens containing a centered 2mm artificial pupil. Receptor alignment (inferred from the entrance pupil location of the peak of the Stiles-Crawford function) significantly changed (0.8 mm) in the direction of the "new pupil" over a time course of 5 days. This alignment persisted for as long as the pupil was worn (1 month). With removal of the artificial pupil, the receptor alignment returned to its original eccentric orientation in 5 days. The results indicate that an active phototropic mechanism significantly influences receptor alignment toward the pupillary aperture.


This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.