E.1 EYEBALLS 3D: Videos of Patients, Models, Dogs L.F. Dell'Osso Daroff-Dell’Osso Ocular Motility Laboratory CASE Medical School and Louis Stokes Cleveland DVA Medical Center Department of Neurology Case Western Reserve University, Cleveland, OH

MV1 INS 1cy PPfs

MV2 INS 4cy Jef

MV3 INS 3cy PPfs

MV4 INS PPfs

MV5 INS PPfs Hor Vrt Tor

MV6 INS Subclinical SSN

MV7 INS PPfs Model & Human

MV8 INS Pfs Step Model

MV9 INS PPfs Pulse Model

MV10 INS Ramp Step-Ramp Model

MV11 FMNS Gaze-Angle Effect Model

MV12 FMNS Alternate Cover Test Model

MV13 FMNS Adducting Eye Fix Model

MV14 INS Damping Rapid Convergence

MV15 INS Pre-T&R

MV16 INS Post-T&R

MV17 INS Pre-Gene Therapy

MV18 INS Pre-Gene Therapy

MV19 INS Post-Gene Therapy

MV20 INS Post-Gene Therapy

OSCILLOPSIA (perceived world motion) Under Normal Viewing Conditions: INSNo OSOP = no impairment *NOT SYMPTOMATIC ANOSOP = severe impairment *PRIMARY SYMPTOM Under Certain Viewing Conditions: INSsome may “note” OSOP = no impairment *NOT SYMPTOMATIC

MV21 Oscillopsia Simulation

No ECPY ECPY MV21 Oscillopsia Simulation

MV22 APN Pre- Post-Therapy

MV23 INS Alternating J Model

MV24 Flutter

MV25 Flutter (BLind Person)

MV26 Psychogenic Flutter

MV27 Square-Wave Jerks

MV28 Opsoclonus