This is a sources sought/RFI for market research and planning purposes only, not a solicitation, seeking sources to supply an Accommodation Meter plusoptiX R09 (PowerRef 3), including software license, setup kit, and shipping. The device must enable binocular dynamic photoretinoscopy, measuring accommodation, convergence, and pupil size at a 50 Hz sampling rate, with a 1-meter working distance and integrated eye tracking. The equipment is needed for a VA-funded study on home-based treatment of binocular eye dysfunction in Veterans with traumatic brain injury, at the Louis Stokes Cleveland VA Medical Center. Interested parties must be the OEM or an authorized dealer/distributor, with no gray market items, and must demonstrate their capability to meet the detailed technical specifications. No budget amount or performance timeline is specified in the notice.