Utilize these innovative prism flippers to:
- Assist in diagnosing distance fusional instability
- Monitor the recovery progress of distance fusional instability
- Aid in training and improving distance fusional facility
Kit Includes:
- Bernell Custom Prism Flipper with (2) 1PD Base-In Lenses (2PD Range) on one side and (2) 2PD Base-Out Lenses (4PD Range) on the other side
- Laminated Target Card with letter sized for 15ft testing distance plus Quick Instruction Guide on back
- Instruction Sheet
Research Articles:
Tannen, B., Rogers, J., Ciuffreda, K. J., Lyons, E., & Shelley-Tremblay, J. (2016). Distance Horizontal Fusional Facility (DFF): A Proposed New Diagnostic Test for Concussion Patients. Vision Development & Rehabilitation, 2(3), 170-175. Click here to read the article
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