Spearman correlation coefficients were in addition computed between mean accommodation response (accommodation response7-min average) and mean contrast thresholds (contrast threshold7-min average) for each viewing condition for the purpose of assessing the internal validity of the results obtained with two different measurement techniques.
The typical control strategy of disaccommodation results in faster responses than accommodation but at the cost of overshooting the required steady-state level.
In the measurement records of all subjects a lag (residual negative response) of accommodation to the 2 D stimulus was observed.
In the two viewing conditions with high accommodative demands, the accommodation responses were positively associated with the muscle activity levels, see Table 2.
Intravenous infusion of pilocarpine was a rapid and reliable method of producing a nearly maximal accommodative response and maintaining accommodation when desired.
Figure 8(a) shows the average AR across all conditions and subjects for disaccommodation (response to + 0.5 D step), and accommodation (response to −0.5 D step). Figure 8(b) shows the average AR across conditions for each subject for disaccommodation and accommodation.
With instrumentation derived from war surplus material and under the banner of "systems theory," eye movements, the pupil, and accommodation responses were recorded to step, pulse, ramp, and sinusoidal stimuli.
A remote haploscopic video refractor was used to assess vergence and accommodation responses in a group of 32 emmetropic, orthophoric, symptom free, young adults naïve to vision experiments in a minimally instructed setting.
This study assessed objective changes in vergence and accommodation responses in naive young adults after a 2-week period of eye exercises under controlled conditions to determine the extent to which treatment effects occur over other factors.
The presence of HLA II (or HLA DQ/DR) has been related to humoral and cellular responses preventing any accommodation or tolerance of the graft and chronically inducing its rejection [ 37, 38].
