Medical dictionary. 2011.
Nyctalopia — Night blindness, impaired vision in dim light and in the dark, due to impaired function of certain specialized vision cells (the rods) in the retina. The ability of our eyes to quickly view objects as they shift from light to dark areas and the… … Medical dictionary
Amblyopia, nocturnal — Amblyopia refers to blindness so nocturnal amblyopia is, literally, night blindness. Listed in medical dictionaries under Nyctalopia from the Greek nyct (night) + aloas (obscure or blind) + opsis (vision), the condition involves impaired vision… … Medical dictionary
Blindness, night — Impaired vision in dim light and in the dark, due to impaired function of specific vision cells (namely, the rods) in the retina. The ability of our eyes to quickly view objects as they shift from light to dark areas and the ability to see in dim … Medical dictionary
Day sight — Night blindness. Listed in medical dictionaries under “Nyctalopia” from the Greek “nyct’ (night) + “aloas” (obscure or blind) + “opsis” (vision), the condition involves impaired vision in dim light and in the dark (but normal sight in bright… … Medical dictionary
Fear of the dark — Pathological fear of the dark, an abnormal and persistent dread of the dark. Sufferers experience undue anxiety even though they may rationally realize that the dark does not pose a threat commensurate with their fear. Fear of the dark is termed… … Medical dictionary
Night blindness — Impaired vision in dim light and in the dark, due to impaired function of specific vision cells (namely, the rods) in the retina. The ability of our eyes to quickly view objects as they shift from light to dark areas and the ability to see in dim … Medical dictionary
Nocturnal amblyopia — Amblyopia refers to blindness so nocturnal amblyopia is, literally, night blindness. Listed in medical dictionaries under Nyctalopia from the Greek nyct (night) + aloas (obscure or blind) + opsis (vision), the condition involves impaired vision… … Medical dictionary
Nyctophobia — Pathological fear of the dark, an abnormal and persistent dread of the dark. Sufferers experience anxiety even though they may rationally realize that the dark does not pose a threat commensurate with their fear. Formed from the Greek nyx (night) … Medical dictionary
