A HABEL

New methods of rating and prescribing magnifiers for the partially blind.

L L SLOAN, A HABEL, L. L. Sloan, 1957, Journal of the Optical Society of America.

Recognition of red and green point sources by color-deficient observers.

L L SLOAN, A HABEL, L. L. Sloan, 1955, Journal of the Optical Society of America.

Reading aids for the partially blind; new methods of rating and prescribing optical aids.

L L SLOAN, A HABEL, L. L. Sloan, 1956, American journal of ophthalmology.

Color signal systems for the red-green color blind: an experimental test of the three-color signal system proposed by Judd.

L L SLOAN, A HABEL, L. L. Sloan, 1955, Journal of the Optical Society of America.