Kestenbaum number

Kes·ten·baum num·ber

(kes'tĕn-bahm),
the difference between the two pupil diameters when each eye is measured in bright light with the other eye tightly covered; an indicator of the relative afferent pupillary defect in patients with two normally innervated irises.

Kes·ten·baum num·ber

(kes'ten-bowm nŭm'bĕr)
The difference between the two pupil diameters when each eye is measured in bright light with the other eye tightly covered; an indicator of the relative afferent pupillary defect in patients with two normally innervated irises.

Kestenbaum,

Alfred, U.S. ophthalmologist, 1890-1961.
Kestenbaum number - the difference between the two pupil diameters when each eye is measured in bright light with the other eye tightly covered.
Kestenbaum sign - a decrease in the number of arterioles crossing optic disk margins as a sign of optic neurtis.