Visual Impairment Clinical Trial
Official title:
Measuring of Neuro-visual Functionality With New Human Visual System Device Ocusweep
The aim of this study is to measure visual acuity, contrast sensitivity and visual field by
SAP-method using a novel device Ocusweep compared to currently widely used methods. Addition
to that, the aim is to validate a novel perimetry method (Visual Search Test, VST) which is
based on reaction times in visual decision- making task, where the subject is allowed to move
eyes and where the fixation is verified by the subject himself in contrast to standard
automatic perimetry (SAP) where prolonged stationary fixation and external fixation
monitoring apparatus is required. Reaction-time based visual field device Ocusweep is
compared to generally used SAP methods. Those tests will be done for healthy volunteers and
for persons with diagnosed eye or brain disease.
Ocusweep OcuRT vision based choice reaction time test is validated for test repeatability and
compared to Trail Making Test (TMT), Useful Field of View (UFOV) and Vienna Test System (VTS)
reaction time tests. To evaluate the ability to detect unreliable results, OcuRT test is also
done under cognitive load and with instructions to cheat the test.
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