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This study examines the effects of the tenotomy and reattachment procedure on visual function, using model predictions and patient data. It explores the impact of target timing, pursuit gain, eye switching, and various conditions on target acquisition. The findings suggest that the procedure improves visual function, but there is still room for improvement in target timing for better target acquisition.
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Dynamic Improvements in Visual Functionafter the Tenotomy and Reattachment Procedure:Model Predictions and Patient Data —“Will T&R Prevent Missing the Bird” L.F. Dell'Osso1-3, Z.I. Wang1,3, and S. Prakish1 The Daroff-Dell’Osso Ocular Motility Laboratory1– Louis Stokes Cleveland Department of Veterans Affairs Medical Center and CASE Medical School, Departments of Neurology2 and Biomedical Engineering3, Case Western Reserve University, Cleveland OH; USA
Human Data Bad Target Timing = Poor Target Acquisition Half Speed Lt > 2 s
Human Data Good Target Timing = Fast Target Acquisition Half Speed Lt ~= 0.8 s Also: Good Pursuit Gain!
Human Data Same Patient, Different Pursuit Gains vs. Direction Half Speed Lt > 2 s Bad Pursuit Gain = Poor Target Acquisition
Human Data Eye Switching Contributes to Longer Lt Half Speed Lt ~= 1 s INS + Strabismus = Poorer Target Acquisition
Model Simulation fs Steady-State Error T&R Broadens and Improves NAFX and Lowers Target Acquisition Time Half Speed Lt ~= 1 s Bad Target Timing Still = Poorer Target Acquisition
Fast Target Acquisition, Good Pursuit, VOR, & Eye-Hand Coordination Copper Water Trial 2000 Copper Hunting 2000
T&R means seeing MORE, BETTER, and FASTER, but... Seeing Faster Improves Visual Function and is Necessary for Most Activities in a Full Life I may still miss the bird!
