ˈday-blindness
A visual defect in which the eyes see indistinctly, or not at all, by daylight, but tolerably well by artificial light.
| 1834 Good Study Med. (ed. 4) III. 145. 1838 Penny Cycl. XII. 114/2 Nyctalopia, night-vision, or day-blindness, probably never occurs as a separate disease. |