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2. Behavior of visual acuity with and without neutral density filter;Arch Ophthalmol,1959
3. The visual acuity at various levels of illumination;Lawwill, T.; Burian, H.M.;Arch Ophthalmol; Luminance, contrast function and visual acuity in functional amblyopia,1959
4. The luminance-dependent nature of the visual abnormality in strabismic amblyopia;Hess, R.F.; Howell, E.R.;Vision Res,1978
5. Differences in the neural basis of human amblyopias: The effect of mean luminance;Hess, R.F.; Campbell, F.W.; Zimmern, R.;Vision Res,1980