Tonic accommodation predicts closed-loop accommodation responses.

摘要: Abstract The purpose of this study is to examine the potential relationship between tonic accommodation (TA), near work induced TA-adaptation and steady state closed-loop response (AR). Forty-two graduate students participated in study. Various aspects their system were objectively measured using an open-field infrared auto-refractor (Grand Seiko WAM-5500). Tonic was assessed a completely dark environment. association TA AR linear regression correlations t -test comparisons. Initial mean baseline 1.84 diopter (D) (SD ± 1.29 D) with wide distribution range (−0.43 D 5.14 D). For monocular visual tasks, significantly correlated AR. slope best fit line indicated that varied by approximately 0.3 D for every 1 D change TA. This ratio consistent across variety viewing distances different including both static targets continuous reading. Binocular reading conditions weakened correlation AR, although results remained statistically significant. 10 min task 3 D demand did not reveal significant either or binocular conditions. Consistently, show any during found strong open-loop tasks. Difference under condition suggests role vergence compensation