Clinical Research Directory

Inclusion Criteria: * Healthy adult age 18-75 years inclusive * Willing and able to provide informed consent * Able to understand and follow instructions (Norwegian or English) * Able to complete testing procedures Exclusion Criteria: Ophthalmic: * Visual disturbance and blindness of any cause, except for corrected refractive errors * Visual acuity worse than 1.0 logMAR in the tested eye (unable to focus on test stimuli) * History of eye surgery in the last 6 months * Visible abnormalities of the eye (subconjunctival hemorrhages, inflammation, deformed pupils) * Significant eyelid ptosis that would interfere with testing * Pupils unable to respond normally to dilation/contraction due to nerve damage, mechanical damage, or medication Neurological/Medical: * Physical or psychiatric disease which may disturb the measuring procedure * Unable to tolerate testing or maintain attention for \~80 minutes with rest periods * Unable to understand and follow instructions * Photosensitive epilepsy Other: * Known alcoholic or drug dependency * Any condition that, in the investigator's judgment, would make the subject unsuitable for the study