Layton A, Siegel J G
Am J Optom Physiol Opt. 1982 Jan;59(1):90-3. doi: 10.1097/00006324-198201000-00014.
Sensitivity to blue was investigated in a group of subjects having long-standing reduction of visual acuity, and in another group of subjects whose acuity was reduced for the purpose of the study. The distributions of scores was compared with those of a previous study of subjects with normal acuity. The reduction of acuity produced a shift in both distributions, the greater shift occurring in the second group.