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 in dim light and in the dark due to impaired function of specific vision cells (namely, the rods) in the retina.
Night blindness, a classic finding in vitamin A deficiency, was discovered by the English physician William Heberden (1710-1801). (Heberden also described other medical disorders of importance including angina (chest pain that is often severe and crushing, due to an inadequate supply of oxygen to the heart muscle) and Heberden’s nodes, bumps around the small joints due to osteoarthritis.)
Night blindness (nyctalopia) is also called day sight and nyctanopia.
Ambulance: A vehicle equipped with medications and devices intended to stabilize patients while speeding them to a hospital. In its original sense, an ambulance was a mobile field hospital.
Ambulant: Means the same as “ambulatory” (able to ambulate, walk about).
- Ambulatory care
Ambulatory care: Medical care provided on an outpatient basis, including diagnosis, observation, treatment, and rehabilitation services.
- AMC (arthrogryposis multiplex congenita)
AMC (arthrogryposis multiplex congenita): AMC stands for arthrogryposis multiplex congenita, a disorder that develops before birth (prenatal) is evident at birth (congenital) and involves limited mobility of many (multiple) joints. In AMC, the range of motion of the joints in the arms and legs is usually limited or fixed. Joints affected in AMC may include […]
AMD: Age-related macular degeneration (which may also be abbreviated as ARMD).