Letter | Published:

Binocular Eye Movements when Convergence is Subjectively Changed

Naturevolume 169pages10111013 (1952) | Download Citation



THE photoelectric corneal reflex method of recording eye movements of subjects in the sitting position1 has been applied to the investigation of eye movements which occur when convergence is voluntarily changed. In these experiments, one fixation target only was used; this was a bright pin-hole, angular diameter 1′, distant 5½ ft. from the subject and situated on the visual axis of the right eye when this eye is looking straight ahead. The subject fixated this target binocularly, then increased his convergence by subjectively moving both eyes towards the nose through equal angles, the size of which was at his discretion, and then resumed steady fixation of the target. This cycle was repeated several times during a single recording; the frequency was also at the subject's discretion.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Lord, M. P., Brit. J. Ophthal., 35, 21 (1951).

  2. 2

    Lord, M. P., and Wright, W. D., Nature, 163, 803 (1949).

Download references

Author information


  1. Chelsea Polytechnic, London, S.W.3

    • MARY P. LORD


  1. Search for MARY P. LORD in:

About this article

Publication history

Issue Date



Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.