Time‐of‐day variations in oculomotor function: 1. Tonic accommodation and tonic vergence
- 1 October 1988
- journal article
- research article
- Published by Wiley in Ophthalmic and Physiological Optics
- Vol. 8 (4) , 415-422
- https://doi.org/10.1111/j.1475-1313.1988.tb01178.x
Abstract
Time‐of‐day variations were studied both in tonic accomodation and in tonic vergence. Thirty‐six male volunteers were measured once in the morning and at one other time on the same day. The mean baseline value of tonic accomodation was 2.02 D. Time‐of‐day variations were found, with a late evening measure being + 0.6 D greater than the morning value. No independent time‐of‐day fluctuations were found in tonic vergence. Post‐hoc analysis, however, showed that tonic vergence tended to shift in the same direction as an individual's tonic accommodation during the afternoon. During the evening, tonic vergences tended to shift oppositely to tonic accommodation.This publication has 22 references indexed in Scilit:
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