moonblink means nyctalopia. Lexicurio rates it Sui generis — a strength score of 91 out of 100.
Why “moonblink” is a great word
MOONBLINK — [Noun] An archaic term for nyctalopia, or night blindness, once attributed to sleeping in moonlight. From moon + blink, reflecting the former belief that the condition was caused by exposure to moonlight. Unlike "nyctalopia" (a sterile, clinical diagnosis) or "hemeralopia" (its literal opposite, day blindness), "moonblink" is a diagnosis of poetic causality. It evokes the milky sheen on a midnight field blamed for a traveler's stumble, the imagined curse for a shepherd who dozed in a silvered meadow, and a world contracting to a dark pocket while a silver coin hangs overhead—a quiet testament to the human urge to blame the beautiful for our frailties.
Etymology
From moon + blink. It was formerly said to be caused by sleeping in moonlight.