Michael Wall M.D.
michael-wallatuiowadotedu
Professor of Neurology; Ophthalmology

Sensory visual system information processing with emphasis on the application of visual physiology and neural networks to development of new clinical visual tests.
We are studying visual processing throughout the visual field using various static and moving (random dot motion) stimuli. We use both the subject's manual response to sensing stimuli and their eye movements to the stimulus as outcome measures. We are also using the multifocal visual evoked response as an objective measure of visual function. We are interested in studying both changes related to age and pathology of the sensory visual system. Our goals are to understand mechanisms of visual processing in health and disease and develop new and more sensitive methods of testing vision.
Current Projects:
Development of motion perimetry and eye movement motion perimetry.
Early detection of visual field loss in glaucoma and idiopathic intracranial hypertension.
Testing of patients with optic nerve disease to separate damage from different retinal ganglion cell subsystems.
Visual field correlates of driving performance.
Treatment of optic neuritis (Optic Neuritis Study Group).
Studies of perimetric variability in in glaucoma, optic neuritis and idiopathic intracranial hypertension.
Treatment of idiopathic intracranial hypertension (pseudotumor cerebri)

Selected Publications

Wall M, Johnson CA, Kutzko KE, Nguyen R, Brito C, Keltner J. Long- and short-term variability of automated perimetry results in optic neuritis patients and normal subjects. Arch Ophthalmol 1998;116;53-61.

Wall M, Jennisch CS. Random dot motion stimuli are more sensitive that light stimuli for detection of visual field loss in ocular hypertension patients. Optom Vision Science 1999;76:550-557.

Wall M, Punke SG, Stickney TL, Brito CF, Withrow KR, Kardon RH. SITA standard in optic neuropathies and hemianopias: a comparison with full threshold testing. Invest Ophthalmol Vis Sci 2001;42:528-537.

Wall M, Kutzko KE, Chauhan BC. The relationship of visual threshold and reaction time to visual field eccentricity with conventional automated perimetry. Vision Res 2002;42:781-787.

Wall M, Neahring RK, Woodward KR. Sensitivity and specificity of frequency doubling perimetry in neuro-ophthalmologic disorders: a comparison with conventional automated perimetry. Invest Ophthalmol Vis Sci 2002;43:1277-1283.

Wall M, Woodward KR, Brito CF. The effect of attention on conventional automated perimetry and luminance size threshold perimetry. Invest Ophthalmol Vis Sci 2004;45:342–350.