Reduced accommodative facility was not found, despite the laboratory-based measures that revealed slowed dynamics in the group with mTBI.
It included NPA, NRA, PRA, and accommodative facility (using [+ or -] 2.
5) Accommodative facility
is a measure of the patient's ability to focus easily from one distance to another.
Reported values for norms are 8cpm binocularly and 13cpm monocularly in an adult population, but this can vary in younger patients (2,8) If fewer cycles are completed, the flippers can be used in this manner as an exercise to improve accommodative facility
The near oculomotor functions assessed with both the conventional methods and COVS were Worth 4 Dot, lateral and vertical phorias, maximum negative fusional vergence (NFV) and positive fusional vergence (PFV) with its associated recovery measured with the von Graefe technique, fixation disparity tested with the Borish near point card (separate nonious lines through polarized lenses), monocular accommodative facility measured with +2.
The stimuli for the monocular accommodative facility test consisted of four red or blue Landolt Cs (0.
In addition, the TBI cohort also exhibited a significant fatigue effect during accommodative facility
testing, which is atypical in the non-TBI population.
The rate of change of accommodation, or accommodative facility
, can be tested with flippers.
In particular, the use of dynamic retinoscopy to make an objective assessment of accommodative facility
is underutilised in the UK.
Five of the patients exhibited accommodative dysfunctions, with all five manifesting reduced accommodative amplitude and two exhibiting slowed accommodative facility
The ability to alter accommodation rapidly and accurately is called accommodative facility
and can be assessed using the [+ or -] 2.
The third test of accommodative function is that of accommodative facility
testing, which assesses the patient's ability to change their accommodation.