(ren'ĕ), a nasal visual field defect with one margin corresponding to the retinal horizontal medium; seen in glaucoma.
Rønne na·sal step
(rĕr'nĕ nā'zăl step) A nasal visual field defect with one margin corresponding to the retinal horizontal medium; seen in glaucoma.
Rønne,
Henning K.T., Danish ophthalmologist, 1878-1947. Rønne nasal step - a nasal visual field defect with one margin corresponding to the retinal horizontal medium.