Related Experiment Videos
Pupillary constriction to darkness in a patient with blue-cone monochromatism
W M Sobol1, A E Kimura, R H Kardon
1Department of Ophthalmology, University of Iowa Hospitals and Clinics, Iowa City 52241.
Journal of Clinical Neuro-Ophthalmology
|March 1, 1991
Abstract:
A 17 year old male patient presented with bilateral photophobia, poor color vision, visual acuity 20/80-20/200, nystagmus, and showed normal fundi. Electroretinography revealed evidence of blue-cone monochromatism. This patient showed constriction of the pupils to darkness or the paradoxic pupillary phenomenon.