The NV-100 near vision tester enable a complete refractive and binocular vision investigation to be carried out with the head and eyes in their normal posture at any working distance.It’s in English. But French and Dutch version are also available.
The refractive tests include:
•Measurement of visual acuity using Snellen letter and illiterate E-chart,and Times Roman reading types.
•Accurate determination of presbyopic additions and other near corrections.
•Near vision astigmatism tests.
•Amplitude of accommodation including monocular measurements
under binocular conditions.
The Binocular balance tests include:
•Fixation disparity test for uncompensated heterophoria motor
eye dominance. Accommodation-convergence relationship.
•Quantitative evaluation of foveal suppression in heterophoria patients.
•Near point of convergence.
•Targets for subjective cover tests for heterophoria and harmonious ARC.